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Index to OEIS: Section Con

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concatenate divisors: A037278*
concatenate prime factors: A037276*, A048595* (base 2)
concatenation of all numbers up through n, see here
concatenation: There is no universally accepted symbol for concatenation!
concatenation: 'a1 followed by a2' is used in A034821
concatenation: a1 # a2 is used in A133344
concatenation: a1 & a2 and a1 + a2 may also be used
concatenation: a1 . a2 is used in A115437 (as in Perl)
concatenation: a1 // a2 is used in A115429 (as in Fortran)
concatenation: a1 : a2 is used in A089591
concatenation: a1 U a2 is used in A165784
concatenation: a1 ^ a2 is used in A091975 (cf. A091844)
concatenation: a1a2 is used in A089710
concatenation: a1_a2 is used in A153164
concatenation: Maple uses parse(cat(a1, a2, ..., an))
concatenation: Mathematica uses FromDigits[Join[IntegerDigits[a1], IntegerDigits[a2], ..., IntegerDigits[an]]] or ToExpression[StringJoin[ToString[a1], ToString[a2], ..., ToString[an]]] or FromDigits["a1"<>"a2"<>...<>"an"]
concatenation: Pari uses eval(Str(a1, a2, ..., an))
conditionally convergent series: A002387, A092324, A092267, A092753
conference matrices: see matrices, conference
configurations , sequences related to :

configurations (combinatorial or geometrical): A001403* A099999 A023994 A005787 A000698 A100001 A098702 A098804 A098822 A098841 A098851 A098852 A098854

Congruence property:: A002703, A002704, A002705
Congruences:: A001915, A001916
congruent mod 1 to 0 : A000004
congruent mod 10 to 0 (not) : A052382
congruent mod 10 to 0 : A008592
congruent mod 10 to 1 : A017281
congruent mod 10 to 2 : A017293
congruent mod 10 to 3 : A017305
congruent mod 10 to 4 : A017317
congruent mod 10 to 5 : A017329
congruent mod 10 to 6 : A017341
congruent mod 10 to 7 : A017353
congruent mod 10 to 8 : A017365
congruent mod 10 to 9 : A017377
congruent mod 10 to {1, 7} : A131229
congruent mod 10 to {1, 9} : A090771
congruent mod 10 to {2, 8} : A090772
congruent mod 10 to {4, 6} : A090773
congruent mod 2 to 0 (not) : A005408
congruent mod 2 to 0 : A005843
congruent mod 2 to 1 (not) : A005843
congruent mod 2 to 1 : A005408
congruent mod 3 to 0 (not) : A001651
congruent mod 3 to 0 : A008585
congruent mod 3 to 1 (not) : A007494
congruent mod 3 to 1 : A016777
congruent mod 3 to 2 (not) : A032766
congruent mod 3 to 2 : A016789
congruent mod 3 to {0, 1} : A032766
congruent mod 3 to {0, 2} : A007494
congruent mod 3 to {1, 2} : A001651
congruent mod 4 to 0 (not) : A042968
congruent mod 4 to 0 : A008586
congruent mod 4 to 1 (not) : A004772
congruent mod 4 to 1 : A016813
congruent mod 4 to 2 (not) : A042965
congruent mod 4 to 2 : A016825
congruent mod 4 to 3 (not) : A004773
congruent mod 4 to 3 : A004767
congruent mod 4 to {0, 1, 2} : A004773
congruent mod 4 to {0, 1, 3} : A042965
congruent mod 4 to {0, 1} : A042948
congruent mod 4 to {0, 2, 3} : A004772
congruent mod 4 to {0, 3} : A014601
congruent mod 4 to {1, 2, 3} : A042968
congruent mod 4 to {1, 2} : A042963
congruent mod 4 to {2, 3} : A042964
congruent mod 5 to 0 (not) : A047201
congruent mod 5 to 0 : A008587
congruent mod 5 to 1 (not) : A047203
congruent mod 5 to 1 : A016861
congruent mod 5 to 2 (not) : A047207
congruent mod 5 to 2 : A016873
congruent mod 5 to 3 (not) : A032769
congruent mod 5 to 3 : A016885
congruent mod 5 to 4 (not) : A001068
congruent mod 5 to 4 : A016897
congruent mod 5 to {0, 1, 2, 3} : A001068
congruent mod 5 to {0, 1, 2, 4} : A032769
congruent mod 5 to {0, 1, 2} : A047217
congruent mod 5 to {0, 1, 3, 4} : A047207
congruent mod 5 to {0, 1, 3} : A047220
congruent mod 5 to {0, 1, 4} : A008854
congruent mod 5 to {0, 1} : A008851
congruent mod 5 to {0, 2, 3, 4} : A047203
congruent mod 5 to {0, 2, 3} : A047222
congruent mod 5 to {0, 2, 4} : A047212
congruent mod 5 to {0, 2} : A047215
congruent mod 5 to {0, 3, 4} : A047205
congruent mod 5 to {0, 3} : A047218
congruent mod 5 to {0, 4} : A047208
congruent mod 5 to {1, 2, 3, 4} : A047201
congruent mod 5 to {1, 2, 3} : A047223
congruent mod 5 to {1, 2, 4} : A032793
congruent mod 5 to {1, 2} : A047216
congruent mod 5 to {1, 3, 4} : A047206
congruent mod 5 to {1, 3} : A047219
congruent mod 5 to {1, 4} : A047209
congruent mod 5 to {2, 3, 4} : A047202
congruent mod 5 to {2, 3} : A047221
congruent mod 5 to {2, 4} : A047211
congruent mod 5 to {3, 4} : A047204
congruent mod 6 to 0 (not) : A047253
congruent mod 6 to 0 : A008588
congruent mod 6 to 1 (not) : A047248
congruent mod 6 to 1 : A016921
congruent mod 6 to 2 (not) : A047252
congruent mod 6 to 2 : A016933
congruent mod 6 to 3 (not) : A047263
congruent mod 6 to 3 : A016945
congruent mod 6 to 4 (not) : A047256
congruent mod 6 to 4 : A016957
congruent mod 6 to 5 (not) : A047226
congruent mod 6 to 5 : A016969
congruent mod 6 to {0, 1, 2, 3, 4} : A047226
congruent mod 6 to {0, 1, 2, 3, 5} : A047256
congruent mod 6 to {0, 1, 2, 3} : A047246
congruent mod 6 to {0, 1, 2, 4, 5} : A047263
congruent mod 6 to {0, 1, 2, 4} : A047237
congruent mod 6 to {0, 1, 2, 5} : A047269
congruent mod 6 to {0, 1, 2} : A047240
congruent mod 6 to {0, 1, 3, 4, 5} : A047252
congruent mod 6 to {0, 1, 3, 5} : A047273
congruent mod 6 to {0, 1, 3} : A047242
congruent mod 6 to {0, 1, 4, 5} : A047260
congruent mod 6 to {0, 1, 4} : A047234
congruent mod 6 to {0, 1, 5} : A047266
congruent mod 6 to {0, 1} : A047225
congruent mod 6 to {0, 2, 3, 4, 5} : A047248
congruent mod 6 to {0, 2, 3, 4} : A047229
congruent mod 6 to {0, 2, 3} : A047244
congruent mod 6 to {0, 2, 4, 5} : A047262
congruent mod 6 to {0, 2, 5} : A047267
congruent mod 6 to {0, 2} : A047238
congruent mod 6 to {0, 3, 4, 5} : A047250
congruent mod 6 to {0, 3, 4} : A047231
congruent mod 6 to {0, 3, 5} : A047271
congruent mod 6 to {0, 4, 5} : A047258
congruent mod 6 to {0, 4} : A047233
congruent mod 6 to {0, 5} : A047264
congruent mod 6 to {1, 2, 3, 4, 5} : A047248
congruent mod 6 to {1, 2, 3, 4} : A031477
congruent mod 6 to {1, 2, 3, 5} : A047255
congruent mod 6 to {1, 2, 3} : A047245
congruent mod 6 to {1, 2, 4} : A047236
congruent mod 6 to {1, 2, 5} : A047268
congruent mod 6 to {1, 2} : A047239
congruent mod 6 to {1, 3, 4, 5} : A047251
congruent mod 6 to {1, 3, 4} : A029739
congruent mod 6 to {1, 3} : A047241
congruent mod 6 to {1, 4, 5} : A047259
congruent mod 6 to {1, 5} : A007310
congruent mod 6 to {2, 3, 4, 5} : A047247
congruent mod 6 to {2, 3, 4} : A047228
congruent mod 6 to {2, 3, 5} : A047254
congruent mod 6 to {2, 3} : A047243
congruent mod 6 to {2, 4, 5} : A047261
congruent mod 6 to {2, 4} : A047235
congruent mod 6 to {3, 4, 5} : A047249
congruent mod 6 to {3, 4} : A047230
congruent mod 6 to {3, 5} : A047270
congruent mod 6 to {4, 5} : A047257
congruent mod 7 to 0 (not) : A047304
congruent mod 7 to 0 : A008589
congruent mod 7 to 1 (not) : A047306
congruent mod 7 to 1 : A016993
congruent mod 7 to 2 (not) : A047310
congruent mod 7 to 2 : A017005
congruent mod 7 to 3 (not) : A047318
congruent mod 7 to 3 : A017017
congruent mod 7 to 4 (not) : A032775
congruent mod 7 to 4 : A017029
congruent mod 7 to 5 (not) : A047303
congruent mod 7 to 5 : A017041
congruent mod 7 to 6 (not) : A047368
congruent mod 7 to 6 : A017053
congruent mod 7 to {0, 1, 2, 3, 4, 5} : A047368
congruent mod 7 to {0, 1, 2, 3, 4, 6} : A047303
congruent mod 7 to {0, 1, 2, 3, 4} : A047337
congruent mod 7 to {0, 1, 2, 3, 5, 6} : A032775
congruent mod 7 to {0, 1, 2, 3, 5} : A047373
congruent mod 7 to {0, 1, 2, 3, 6} : A047287
congruent mod 7 to {0, 1, 2, 3} : A047361
congruent mod 7 to {0, 1, 2, 4, 5, 6} : A047318
congruent mod 7 to {0, 1, 2, 4, 5} : A047381
congruent mod 7 to {0, 1, 2, 4, 6} : A047295
congruent mod 7 to {0, 1, 2, 4} : A047351
congruent mod 7 to {0, 1, 2, 5, 6} : A047326
congruent mod 7 to {0, 1, 2, 5} : A047388
congruent mod 7 to {0, 1, 2, 6} : A047279
congruent mod 7 to {0, 1, 2} : A047354
congruent mod 7 to {0, 1, 3, 4, 5, 6} : A047310
congruent mod 7 to {0, 1, 3, 4, 5} : A047367
congruent mod 7 to {0, 1, 3, 4, 6} : A047299
congruent mod 7 to {0, 1, 3, 4} : A047344
congruent mod 7 to {0, 1, 3, 5, 6} : A047330
congruent mod 7 to {0, 1, 3, 5} : A047392
congruent mod 7 to {0, 1, 3, 6} : A047283
congruent mod 7 to {0, 1, 3} : A047357
congruent mod 7 to {0, 1, 4, 5, 6} : A047314
congruent mod 7 to {0, 1, 4, 5} : A047377
congruent mod 7 to {0, 1, 4, 6} : A047291
congruent mod 7 to {0, 1, 4} : A047347
congruent mod 7 to {0, 1, 5, 6} : A047322
congruent mod 7 to {0, 1, 5} : A047384
congruent mod 7 to {0, 1, 6} : A047275
congruent mod 7 to {0, 1} : A047274
congruent mod 7 to {0, 2, 3, 4, 5, 6} : A047306
congruent mod 7 to {0, 2, 3, 4, 5} : A047363
congruent mod 7 to {0, 2, 3, 4, 6} : A047301
congruent mod 7 to {0, 2, 3, 4} : A047340
congruent mod 7 to {0, 2, 3, 5, 6} : A047332
congruent mod 7 to {0, 2, 3, 5} : A047371
congruent mod 7 to {0, 2, 3, 6} : A047285
congruent mod 7 to {0, 2, 3} : A047359
congruent mod 7 to {0, 2, 4, 5, 6} : A047316
congruent mod 7 to {0, 2, 4, 5} : A047379
congruent mod 7 to {0, 2, 4, 6} : A047293
congruent mod 7 to {0, 2, 4} : A047349
congruent mod 7 to {0, 2, 5, 6} : A047324
congruent mod 7 to {0, 2, 5} : A047386
congruent mod 7 to {0, 2, 6} : A047277
congruent mod 7 to {0, 2} : A047352
congruent mod 7 to {0, 3, 4, 5, 6} : A047308
congruent mod 7 to {0, 3, 4, 5} : A047365
congruent mod 7 to {0, 3, 4, 6} : A047297
congruent mod 7 to {0, 3, 4} : A047342
congruent mod 7 to {0, 3, 5, 6} : A047328
congruent mod 7 to {0, 3, 5} : A047390
congruent mod 7 to {0, 3, 6} : A047281
congruent mod 7 to {0, 3} : A047355
congruent mod 7 to {0, 4, 5, 6} : A047312
congruent mod 7 to {0, 4, 5} : A047375
congruent mod 7 to {0, 4, 6} : A047289
congruent mod 7 to {0, 4} : A047345
congruent mod 7 to {0, 5, 6} : A047320
congruent mod 7 to {0, 5} : A047382
congruent mod 7 to {0, 6} : A047335
congruent mod 7 to {1, 2, 3, 4, 5, 6} : A047304
congruent mod 7 to {1, 2, 3, 4, 5} : A047369
congruent mod 7 to {1, 2, 3, 4, 6} : A047302
congruent mod 7 to {1, 2, 3, 4} : A047338
congruent mod 7 to {1, 2, 3, 5, 6} : A032796
congruent mod 7 to {1, 2, 3, 5} : A047372
congruent mod 7 to {1, 2, 3, 6} : A047286
congruent mod 7 to {1, 2, 3} : A047360
congruent mod 7 to {1, 2, 4, 5, 6} : A047317
congruent mod 7 to {1, 2, 4, 5} : A047380
congruent mod 7 to {1, 2, 4, 6} : A047294
congruent mod 7 to {1, 2, 4} : A047350
congruent mod 7 to {1, 2, 5, 6} : A047325
congruent mod 7 to {1, 2, 5} : A047387
congruent mod 7 to {1, 2, 6} : A047278
congruent mod 7 to {1, 2} : A047353
congruent mod 7 to {1, 3, 4, 5, 6} : A047309
congruent mod 7 to {1, 3, 4, 5} : A047366
congruent mod 7 to {1, 3, 4, 6} : A047298
congruent mod 7 to {1, 3, 4} : A047343
congruent mod 7 to {1, 3, 5, 6} : A047329
congruent mod 7 to {1, 3, 5} : A047391
congruent mod 7 to {1, 3, 6} : A047282
congruent mod 7 to {1, 3} : A047356
congruent mod 7 to {1, 4, 5, 6} : A047313
congruent mod 7 to {1, 4, 5} : A047376
congruent mod 7 to {1, 4, 6} : A047290
congruent mod 7 to {1, 4} : A047346
congruent mod 7 to {1, 5, 6} : A047321
congruent mod 7 to {1, 5} : A047383
congruent mod 7 to {1, 6} : A047336
congruent mod 7 to {2, 3, 4, 5, 6} : A047305
congruent mod 7 to {2, 3, 4, 5} : A047362
congruent mod 7 to {2, 3, 4, 6} : A047300
congruent mod 7 to {2, 3, 4} : A047339
congruent mod 7 to {2, 3, 5, 6} : A047331
congruent mod 7 to {2, 3, 5} : A047370
congruent mod 7 to {2, 3, 6} : A047284
congruent mod 7 to {2, 3} : A047358
congruent mod 7 to {2, 4, 5, 6} : A047315
congruent mod 7 to {2, 4, 5} : A047378
congruent mod 7 to {2, 4, 6} : A047292
congruent mod 7 to {2, 4} : A047348
congruent mod 7 to {2, 5, 6} : A047323
congruent mod 7 to {2, 5} : A047385
congruent mod 7 to {2, 6} : A047276
congruent mod 7 to {3, 4, 5, 6} : A047307
congruent mod 7 to {3, 4, 5} : A047364
congruent mod 7 to {3, 4, 6} : A047296
congruent mod 7 to {3, 4} : A047341
congruent mod 7 to {3, 5, 6} : A047327
congruent mod 7 to {3, 5} : A047389
congruent mod 7 to {3, 6} : A047280
congruent mod 7 to {4, 5, 6} : A047311
congruent mod 7 to {4, 5} : A047374
congruent mod 7 to {4, 6} : A047288
congruent mod 7 to {5, 6} : A047319
congruent mod 8 to 0 (not) : A047592
congruent mod 8 to 0 : A008590
congruent mod 8 to 1 (not) : A047594
congruent mod 8 to 1 : A017077
congruent mod 8 to 2 (not) : A047565
congruent mod 8 to 2 : A017089
congruent mod 8 to 3 (not) : A047573
congruent mod 8 to 3 : A017101
congruent mod 8 to 4 (not) : A047588
congruent mod 8 to 4 : A017113
congruent mod 8 to 5 (not) : A004776
congruent mod 8 to 5 : A004770
congruent mod 8 to 6 (not) : A047595
congruent mod 8 to 6 : A017137
congruent mod 8 to 7 (not) : A004777
congruent mod 8 to 7 : A004771
congruent mod 8 to {0, 1, 2, 3, 4, 5, 6} : A004777
congruent mod 8 to {0, 1, 2, 3, 4, 5, 7} : A047595
congruent mod 8 to {0, 1, 2, 3, 4, 5} : A047602
congruent mod 8 to {0, 1, 2, 3, 4, 6, 7} : A004776
congruent mod 8 to {0, 1, 2, 3, 4, 6} : A047420
congruent mod 8 to {0, 1, 2, 3, 4, 7} : A047549
congruent mod 8 to {0, 1, 2, 3, 4} : A047453
congruent mod 8 to {0, 1, 2, 3, 5, 6, 7} : A047588
congruent mod 8 to {0, 1, 2, 3, 5, 6} : A047450
congruent mod 8 to {0, 1, 2, 3, 5, 7} : A047490
congruent mod 8 to {0, 1, 2, 3, 5} : A047607
congruent mod 8 to {0, 1, 2, 3, 6, 7} : A047505
congruent mod 8 to {0, 1, 2, 3, 6} : A047405
congruent mod 8 to {0, 1, 2, 3, 7} : A047534
congruent mod 8 to {0, 1, 2, 3} : A047476
congruent mod 8 to {0, 1, 2, 4, 5, 6, 7} : A047573
congruent mod 8 to {0, 1, 2, 4, 5, 7} : A047498
congruent mod 8 to {0, 1, 2, 4, 5} : A047614
congruent mod 8 to {0, 1, 2, 4, 6, 7} : A047513
congruent mod 8 to {0, 1, 2, 4, 6} : A047412
congruent mod 8 to {0, 1, 2, 4, 7} : A047542
congruent mod 8 to {0, 1, 2, 4} : A047466
congruent mod 8 to {0, 1, 2, 5, 6, 7} : A047581
congruent mod 8 to {0, 1, 2, 5, 6} : A047442
congruent mod 8 to {0, 1, 2, 5, 7} : A047483
congruent mod 8 to {0, 1, 2, 5} : A047620
congruent mod 8 to {0, 1, 2, 6, 7} : A047555
congruent mod 8 to {0, 1, 2, 6} : A047397
congruent mod 8 to {0, 1, 2, 7} : A047527
congruent mod 8 to {0, 1, 2} : A047469
congruent mod 8 to {0, 1, 3, 4, 5, 6, 7} : A047565
congruent mod 8 to {0, 1, 3, 4, 5, 6} : A047428
congruent mod 8 to {0, 1, 3, 4, 5} : A047601
congruent mod 8 to {0, 1, 3, 4, 6, 7} : A047517
congruent mod 8 to {0, 1, 3, 4, 6} : A047416
congruent mod 8 to {0, 1, 3, 4, 7} : A047545
congruent mod 8 to {0, 1, 3, 4} : A047460
congruent mod 8 to {0, 1, 3, 5, 6, 7} : A047585
congruent mod 8 to {0, 1, 3, 5, 6} : A047446
congruent mod 8 to {0, 1, 3, 5, 7} : A047486
congruent mod 8 to {0, 1, 3, 5} : A047624
congruent mod 8 to {0, 1, 3, 6, 7} : A047559
congruent mod 8 to {0, 1, 3, 6} : A047401
congruent mod 8 to {0, 1, 3, 7} : A047530
congruent mod 8 to {0, 1, 3} : A047472
congruent mod 8 to {0, 1, 4, 5, 6, 7} : A047569
congruent mod 8 to {0, 1, 4, 5, 6} : A047432
congruent mod 8 to {0, 1, 4, 5, 7} : A047494
congruent mod 8 to {0, 1, 4, 6, 7} : A047509
congruent mod 8 to {0, 1, 4, 6} : A047409
congruent mod 8 to {0, 1, 4, 7} : A047538
congruent mod 8 to {0, 1, 4} : A047462
congruent mod 8 to {0, 1, 5, 6, 7} : A047577
congruent mod 8 to {0, 1, 5, 6} : A047439
congruent mod 8 to {0, 1, 5, 7} : A047479
congruent mod 8 to {0, 1, 5} : A047616
congruent mod 8 to {0, 1, 6, 7} : A047551
congruent mod 8 to {0, 1, 6} : A047394
congruent mod 8 to {0, 1, 7} : A047523
congruent mod 8 to {0, 1} : A047393
congruent mod 8 to {0, 2, 3, 4, 5, 6, 7} : A047594
congruent mod 8 to {0, 2, 3, 4, 5, 6} : A047424
congruent mod 8 to {0, 2, 3, 4, 5, 7} : A047503
congruent mod 8 to {0, 2, 3, 4, 5} : A047597
congruent mod 8 to {0, 2, 3, 4, 6} : A047418
congruent mod 8 to {0, 2, 3, 4, 7} : A047547
congruent mod 8 to {0, 2, 3, 4} : A047456
congruent mod 8 to {0, 2, 3, 5, 6, 7} : A047587
congruent mod 8 to {0, 2, 3, 5, 6} : A047448
congruent mod 8 to {0, 2, 3, 5, 7} : A047488
congruent mod 8 to {0, 2, 3, 5} : A047605
congruent mod 8 to {0, 2, 3, 6, 7} : A047560
congruent mod 8 to {0, 2, 3, 6} : A047403
congruent mod 8 to {0, 2, 3, 7} : A047532
congruent mod 8 to {0, 2, 3} : A047474
congruent mod 8 to {0, 2, 4, 5, 6, 7} : A047571
congruent mod 8 to {0, 2, 4, 5, 6} : A047434
congruent mod 8 to {0, 2, 4, 5, 7} : A047496
congruent mod 8 to {0, 2, 4, 5} : A047612
congruent mod 8 to {0, 2, 4, 6, 7} : A047511
congruent mod 8 to {0, 2, 4, 7} : A047540
congruent mod 8 to {0, 2, 4} : A047464
congruent mod 8 to {0, 2, 5, 6, 7} : A047579
congruent mod 8 to {0, 2, 5, 6} : A047441
congruent mod 8 to {0, 2, 5, 7} : A047481
congruent mod 8 to {0, 2, 5} : A047618
congruent mod 8 to {0, 2, 6, 7} : A047553
congruent mod 8 to {0, 2, 6} : A047395
congruent mod 8 to {0, 2, 7} : A047525
congruent mod 8 to {0, 2} : A047467
congruent mod 8 to {0, 3, 4, 5, 6, 7} : A047563
congruent mod 8 to {0, 3, 4, 5, 6} : A047426
congruent mod 8 to {0, 3, 4, 5, 7} : A047500
congruent mod 8 to {0, 3, 4, 5} : A047599
congruent mod 8 to {0, 3, 4, 6, 7} : A047515
congruent mod 8 to {0, 3, 4, 6} : A047414
congruent mod 8 to {0, 3, 4} : A047458
congruent mod 8 to {0, 3, 5, 6, 7} : A047583
congruent mod 8 to {0, 3, 5, 6} : A047444
congruent mod 8 to {0, 3, 5} : A047622
congruent mod 8 to {0, 3, 6, 7} : A047557
congruent mod 8 to {0, 3, 6} : A047399
congruent mod 8 to {0, 3, 7} : A047528
congruent mod 8 to {0, 3} : A047470
congruent mod 8 to {0, 4, 5, 6, 7} : A047567
congruent mod 8 to {0, 4, 5, 6} : A047430
congruent mod 8 to {0, 4, 5, 7} : A047492
congruent mod 8 to {0, 4, 5} : A047609
congruent mod 8 to {0, 4, 6, 7} : A047507
congruent mod 8 to {0, 4, 6} : A047407
congruent mod 8 to {0, 4, 7} : A047536
congruent mod 8 to {0, 5, 6, 7} : A047575
congruent mod 8 to {0, 5, 6} : A047437
congruent mod 8 to {0, 5, 7} : A047477
congruent mod 8 to {0, 5} : A047615
congruent mod 8 to {0, 6, 7} : A047590
congruent mod 8 to {0, 6} : A047451
congruent mod 8 to {0, 7} : A047521
congruent mod 8 to {1, 2, 3, 4, 5, 6, 7} : A047592
congruent mod 8 to {1, 2, 3, 4, 5, 6} : A047422
congruent mod 8 to {1, 2, 3, 4, 5, 7} : A047504
congruent mod 8 to {1, 2, 3, 4, 5} : A047603
congruent mod 8 to {1, 2, 3, 4, 6, 7} : A047519
congruent mod 8 to {1, 2, 3, 4, 6} : A047419
congruent mod 8 to {1, 2, 3, 4, 7} : A047449
congruent mod 8 to {1, 2, 3, 4, 7} : A047548
congruent mod 8 to {1, 2, 3, 4} : A047454
congruent mod 8 to {1, 2, 3, 5, 7} : A047489
congruent mod 8 to {1, 2, 3, 5} : A047606
congruent mod 8 to {1, 2, 3, 6, 7} : A047561
congruent mod 8 to {1, 2, 3, 6} : A047404
congruent mod 8 to {1, 2, 3, 7} : A047533
congruent mod 8 to {1, 2, 3} : A047475
congruent mod 8 to {1, 2, 4, 5, 6, 7} : A047572
congruent mod 8 to {1, 2, 4, 5, 6} : A047435
congruent mod 8 to {1, 2, 4, 5, 7} : A047497
congruent mod 8 to {1, 2, 4, 5} : A047613
congruent mod 8 to {1, 2, 4, 6, 7} : A047512
congruent mod 8 to {1, 2, 4, 6} : A047411
congruent mod 8 to {1, 2, 4, 7} : A047541
congruent mod 8 to {1, 2, 4} : A047465
congruent mod 8 to {1, 2, 5, 6, 7} : A047580
congruent mod 8 to {1, 2, 5, 7} : A047482
congruent mod 8 to {1, 2, 5} : A047619
congruent mod 8 to {1, 2, 6, 7} : A047554
congruent mod 8 to {1, 2, 6} : A047396
congruent mod 8 to {1, 2, 7} : A047526
congruent mod 8 to {1, 2} : A047468
congruent mod 8 to {1, 3, 4, 5, 6, 7} : A047564
congruent mod 8 to {1, 3, 4, 5, 6} : A047427
congruent mod 8 to {1, 3, 4, 5, 7} : A047501
congruent mod 8 to {1, 3, 4, 5} : A047600
congruent mod 8 to {1, 3, 4, 6, 7} : A047516
congruent mod 8 to {1, 3, 4, 6} : A047415
congruent mod 8 to {1, 3, 4, 7} : A047544
congruent mod 8 to {1, 3, 4} : A047459
congruent mod 8 to {1, 3, 5, 6, 7} : A047584
congruent mod 8 to {1, 3, 5, 6} : A047445
congruent mod 8 to {1, 3, 5} : A047623
congruent mod 8 to {1, 3, 6, 7} : A047558
congruent mod 8 to {1, 3, 6} : A047400
congruent mod 8 to {1, 3, 7} : A047529
congruent mod 8 to {1, 3} : A047471
congruent mod 8 to {1, 4, 5, 6, 7} : A047568
congruent mod 8 to {1, 4, 5, 6} : A047431
congruent mod 8 to {1, 4, 5, 7} : A047493
congruent mod 8 to {1, 4, 5} : A047610
congruent mod 8 to {1, 4, 6, 7} : A047508
congruent mod 8 to {1, 4, 6} : A047408
congruent mod 8 to {1, 4, 7} : A047537
congruent mod 8 to {1, 4} : A047461
congruent mod 8 to {1, 5, 6, 7} : A047576
congruent mod 8 to {1, 5, 6} : A047438
congruent mod 8 to {1, 5, 7} : A047478
congruent mod 8 to {1, 6, 7} : A047591
congruent mod 8 to {1, 6} : A047452
congruent mod 8 to {1, 7} : A047522
congruent mod 8 to {2, 3, 4, 5, 6, 7} : A047593
congruent mod 8 to {2, 3, 4, 5, 6} : A047423
congruent mod 8 to {2, 3, 4, 5, 7} : A047502
congruent mod 8 to {2, 3, 4, 5} : A047596
congruent mod 8 to {2, 3, 4, 6, 7} : A047518
congruent mod 8 to {2, 3, 4, 6} : A047417
congruent mod 8 to {2, 3, 4, 7} : A047546
congruent mod 8 to {2, 3, 4} : A047455
congruent mod 8 to {2, 3, 5, 6, 7} : A047586
congruent mod 8 to {2, 3, 5, 6} : A047447
congruent mod 8 to {2, 3, 5, 7} : A047487
congruent mod 8 to {2, 3, 5} : A047604
congruent mod 8 to {2, 3, 6} : A047402
congruent mod 8 to {2, 3, 7} : A047531
congruent mod 8 to {2, 3} : A047473
congruent mod 8 to {2, 4, 5, 6, 7} : A047570
congruent mod 8 to {2, 4, 5, 6} : A047433
congruent mod 8 to {2, 4, 5, 7} : A047495
congruent mod 8 to {2, 4, 5} : A047611
congruent mod 8 to {2, 4, 6, 7} : A047510
congruent mod 8 to {2, 4, 6} : A047410
congruent mod 8 to {2, 4, 7} : A047539
congruent mod 8 to {2, 4} : A047463
congruent mod 8 to {2, 5, 6, 7} : A047578
congruent mod 8 to {2, 5, 6} : A047440
congruent mod 8 to {2, 5, 7} : A047480
congruent mod 8 to {2, 5} : A047617
congruent mod 8 to {2, 6, 7} : A047552
congruent mod 8 to {2, 7} : A047524
congruent mod 8 to {3, 4, 5, 6, 7} : A047562
congruent mod 8 to {3, 4, 5, 6} : A047425
congruent mod 8 to {3, 4, 5, 7} : A047499
congruent mod 8 to {3, 4, 5} : A047598
congruent mod 8 to {3, 4, 6, 7} : A047514
congruent mod 8 to {3, 4, 6} : A047413
congruent mod 8 to {3, 4, 7} : A047543
congruent mod 8 to {3, 4} : A047457
congruent mod 8 to {3, 5, 6, 7} : A047582
congruent mod 8 to {3, 5, 6} : A047443
congruent mod 8 to {3, 5, 7} : A047484
congruent mod 8 to {3, 5} : A047621
congruent mod 8 to {3, 6, 7} : A047556
congruent mod 8 to {3, 6} : A047398
congruent mod 8 to {4, 5, 6, 7} : A047566
congruent mod 8 to {4, 5, 6} : A047429
congruent mod 8 to {4, 5, 7} : A047491
congruent mod 8 to {4, 5} : A047608
congruent mod 8 to {4, 6, 7} : A047506
congruent mod 8 to {4, 6} : A047406
congruent mod 8 to {4, 7} : A047535
congruent mod 8 to {5, 6, 7} : A047574
congruent mod 8 to {5, 6} : A047436
congruent mod 8 to {5, 7} : A047550
congruent mod 8 to {6, 7} : A047589
congruent mod 9 to 0 (not) : A168183
congruent mod 9 to 0 : A008591
congruent mod 9 to 1 : A017173
congruent mod 9 to 2 : A017185
congruent mod 9 to 3 : A017197
congruent mod 9 to 4 : A017209
congruent mod 9 to 5 : A017221
congruent mod 9 to 6 : A017233
congruent mod 9 to 7 : A017245
congruent mod 9 to 8 : A017257
congruent mod 9 to {0, 1, 2, 3, 6, 7, 8} : A060464
congruent mod 9 to {0, 1} : A090570
congruent mod 9 to {0, 2, 5, 8} : A174438
congruent mod 9 to {1, 4, 5, 8} : A174396
congruent mod 9 to {1, 8} : A056020
congruent mod 9 to {2, 4, 5, 7} : A056527
congruent mod 9 to {2, 7} : A063289
congruent mod 9 to {3, 6} : A016051
congruent mod 9 to {4, 5} : A156638
congruent mod 9 to {4, 7} : A125758
congruent numbers: A003273*, A006991, A016090
congruent products between domains N and GF(2)[X] , sequences defined by  :

congruent products between domains N and GF(2)[X], Here * stands for ordinary multiplication (A004247), and X means carryless GF(2)[X] multiplication (A048720))

congruent products between domains N and GF(2)[X], 3*n = 3Xn (A003714), 3*n = 7Xn (A048717), 3*n = 7Xn and 5*n = 5Xn (A048719)

congruent products between domains N and GF(2)[X], 5*n = 5Xn (A048716), 7*n = 7Xn (A048715), 7*n = 11Xn (A115770)

congruent products between domains N and GF(2)[X], 9*n = 9Xn (A115845), 9*n = 25Xn (A115801), 9*n = 25Xn, but 17*n is not 49Xn (A115811)

congruent products between domains N and GF(2)[X], 11*n = 31Xn (A115803), 13*n = 21Xn (A115772), 13*n = 29Xn (A115805)

congruent products between domains N and GF(2)[X], 15*n = 15Xn (A048718), 15*n = 23Xn (A115774), 15*n = 27Xn (A115807)

congruent products between domains N and GF(2)[X], 17*n = 17Xn (A115847), 17*n = 49Xn (A115809), 19*n = 55Xn (A115874)

congruent products between domains N and GF(2)[X], 21*n = 21Xn (A115422), 31*n = 31Xn (A115423), 33*n = 33Xn (A114086)

congruent products between domains N and GF(2)[X], 41*n = 105Xn (A115876), 49*n = 81Xn (A114384), 57*n = 73Xn (A114386)

congruent products between domains N and GF(2)[X], 63*n = 63Xn (A115424)

congruent products between domains N and GF(2)[X], array of solutions for n*k = A065621(n) X k: A115872

congruent products between domains N and GF(2)[X], see also A115857, A115871

congruent products between domains N and GF(2)[X]: see also congruent products under XOR

congruent products under XOR , sequences defined by  :

congruent products under XOR, 3*n = 2*n XOR n (A003714), 5*n = 4*n XOR n (A048716), 5*n = 3*n XOR 2*n (A115767)

congruent products under XOR, 7*n = 6*n XOR n (A048715), 7*n = 5*n XOR 2*n (A115813), 7*n = 4*n XOR 3*n (A048715)

congruent products under XOR, 11*n = 10*n XOR n (A115793), 11*n = 9*n XOR 2*n (A115795), 11*n = 8*n XOR 3*n (A115797)

congruent products under XOR, 11*n = 7*n XOR 4*n (A115799), 11*n = 6*n XOR 5*n (A115827), 15*n = 14*n XOR n (A048718)

congruent products under XOR, 17*n = 16*n XOR n (A115847), 17*n = 13*n XOR 4*n (A115817), 19*n = 15*n XOR 4*n (A115819)

congruent products under XOR, 21*n = 20*n XOR n (A115422), 21*n = 15*n XOR 6*n (A115821), 21*n = 11*n XOR 10*n (A115829)

congruent products under XOR, 23*n = 13*n XOR 8*n (A115823), 25*n = 16*n XOR 9*n (A115831), 33*n = 17*n XOR 16*n (A115833)

congruent products under XOR, 31*n = 30*n XOR n (A115423), 33*n = 32*n XOR n (A114086), 63*n = 62*n XOR n (A115424)

congruent products under XOR, 9*n = 8*n XOR n (A115845), 9*n = 7*n XOR 2*n (A115815)

congruent products under XOR, least k such that n XOR n*2^k = n*(2^k + 1), A116361

congruent products under XOR: see also congruent products between domains N and GF(2)[X]

conjecture, sequences related to various conjectures :

conjecture, curling number: A094004

conjectured formulas: see A005158, A005160, A005162, A005163, A005164 (there are conjectured formulas for these sequences which may still be open problems)

conjectured sequences (00): The following sequences contain one or more terms that are only conjectured values

conjectured sequences (01): In some cases the conjectured terms are only mentioned in the comments

conjectured sequences (02): This list was last revised Jun 19 2008. It is surely incomplete, and by the time you look at them their status may have changed

conjectured sequences (03): Suggestions for additions to or deletions from this list will be welcomed - njasloane@gmail.com

conjectured sequences (04): A008892, A098007, A063769 and other sequences related to the "aliquot divisors" problem

conjectured sequences (05): A065083, A090315, A104885, A121091, A051346, A115016

conjectured sequences (06): A075788, A075789, A075790, A075791, A083435, A086548, A087318, A087319, A088126, A090315, A092959

conjectured sequences (07): A000373, A002149, A014595, A014596, A019450, A019459, A020999,

conjectured sequences (08): A022495-A022498, A023054, A023108, A038552, A046125, A052131,

conjectured sequences (09): A066426, A066435, A066450, A066510, A066746, A066817, A067579,

conjectured sequences (10): A068591, A071071, A071887, A072023, A072326, A072540, A074980,

conjectured sequences (11): A074981, A078693, A078754, A078869, A079098, A079398, A079611,

conjectured sequences (12): A080131, A080133, A080134, A080761, A080762, A085508, A086058,

conjectured sequences (13): A086748, A087092, A088910, A091305, A092372-A092382, A096340,

conjectured sequences (14): A098860, A099118, A099119, A105233, A105600, A105601, A108795,

conjectured sequences (15): A110000, A110108, A110172, A110222, A110223, A110312, A110356,

conjectured sequences (16): A112647, A112799, A112826, A118278-A118285, A120414*, A121069,

conjectured sequences (17): A121346, A121507, A121508, A119479, A009287, A090997, A090987,

conjectured sequences (18): A004137, A048873, A056287, A059813, A059817, A059818, A065106, A065107, A081082, A084619, A090659, A099260, A117342,

conjectured sequences (19): A000954, A000974, A007008 (?), A023189-A023193, A036462-A036463, A037018, A039508, A039515, A051522, A056636, A076853, A105170, A118371

conjectured sequences (20): A080803, A124484, A093486, A140394, A007323, A027687, A046060, A046061

conjectures: see also Artin's conjecture

conjectures: see also Catalan's conjecture

conjectures: see also Chvatal conjecture

conjectures: see also complete graph conjecture

conjectures: see also curling number conjecture

conjectures: see also Gilbreath's conjecture

conjectures: see also Goldbach conjecture

conjectures: see also Heawood conjecture

conjectures: see also Kummer's conjecture

conjectures: see also Legendre's conjecture

conjectures: see also Mertens's conjecture

conjectures: see also permutations of the integers, conjectured

conjectures: see also Polya's conjecture

conjectures: see also sequences that need extending

conjugacy classes of groups: see groups, conjugacy classes
Conn, Herb, sums involving 1/binomial(2n,n): A098830+A181334+A185585, A014307+A180875, A181374+A185672
connect the dots: A187679
connected regular graphs, see graphs, regular connected
connecting 2n points: A006605
Connell sequence: A001614*
Consecutive:: A002308, A001223, A007610, A002307, A007513, A000236, A007667, A006889, A001033, A006055
Consistent:: A005779, A001225
constants, decimal expansion of: e A001113, gamma A001620, golden ratio A001622, pi A000796, silver mean A014176
constants, Robbins constant: A073012
constant sequences: see recurrence, linear, order 01, (1)
constructing numbers from other numbers and the operations of addition, subtraction, etc: see under four 4's problem
contexts: A047684
CONTINUANT transform: see Transforms file
continuant: A072347
continued cotangents, sequences related to :

continued cotangents:: A002668, A006266, A006268, A002667, A006267, A002666, A006269

continued fractions , sequences related to :

continued fractions (1):: A003285, A006466, A002951, A003417, A002852, A002211, A006083, A006839, A002947, A002948

continued fractions (2):: A002946, A001685, A001686, A004200, A002665, A006271, A001684, A006085, A002945, A007515

continued fractions (3):: A002937, A001112, A006464, A003118, A001203, A006273, A006270, A002949, A006467, A003117

continued fractions (4):: A006221, A002950, A001204, A006084, A005483, A006518, A005147, A006272, A006274, A005146, A006465

continued fractions for constants: (2/Pi)*Integral(sin(x)/x, x=0..Pi) (A036791), 0.12112111211112... A042974 (A056030) Product_{k>=1} (1-1/2^k) (A048652)

continued fractions for constants: 2^(1/2) etc.: see below under: continued fractions for constants: square roots of 2, etc.

continued fractions for constants: 2^(1/3) (A002945), 3^(1/3) (A002946), 4^(1/3) (A002947), 5^(1/3) (A002948), 6^(1/3) (A002949), 7^(1/3) (A005483), cube root of non-cubes 9+n to 100 (A010239, A010240, etc)

continued fractions for constants: 2^(1/3)+sqrt(3) (A039923), BesselK(1,2)/BesselK(0,2) (A051149), Catalan's constant (A014538)

continued fractions for constants: 2^(1/5) (A002950), 3^(1/5) (A003117), 4^(1/5) (A003118), 5^(1/5) (A002951)

continued fractions for constants: Champernowne (A030167), Conway's (A014967), Copeland-Erdos (A030168), Euler's gamma (A002852)

continued fractions for constants: e (A003417), e/2 (A006083), e/3 (A006084), e/4 (A006085), e^2 (A001204), e^3 (A058282)

continued fractions for constants: e^Pi (A058287), e^pi - pi (A018939), (e+1)/3 (A028360), (e-1)/(e+1) (A016825), i^i = exp(-Pi/2) (A049007)

continued fractions for constants: Fransen-Robinson (A046943), GAMMA(1/3) (A030651), GAMMA(2/3) (A030652), Integral(sin(x)/x, x=0..Pi) (A036790)

continued fractions for constants: golden ratio (A000012)

continued fractions for constants: Khintchine's (A002211), LambertW(1) (A030179), Lehmer's (A002665), Liouville's A012245 (A058304), Niven's (A033151)

continued fractions for constants: ln(2+n) to ln(100) (A016730+n), ln((2n+1)/2) to ln(99/2) (A016528+n)

continued fractions for constants: M(1,sqrt(2)) (A053003), 1 / M(1,sqrt(2)) (A053002), 1 +1/(e +1/(e^2 +..)) (A055972), 2*cos(2*Pi/7) (A039921)

continued fractions for constants: Otter's rooted tree A000081 (A051492), Thue-Morse (A014572), Tribonacci constant (A019712, A058296)

continued fractions for constants: Pi (A001203), 2 Pi (A058291), Pi/2 (A053300), Pi^2 (A058284), Pi^e (A058288), pi+e (A058651)

continued fractions for constants: sqrt(2Pi) (A058293), sqrt(Pi) (A058280), sqrt(e) (A058281)

continued fractions for constants: sqrt(3) - 1: A134451, A048878/A002530

continued fractions for constants: sqrt(3): A040001, A002531/A002530

continued fractions for constants: square roots of 17 (A040012), 18 (A040013), 19 (A010124), 20 (A040015), 21 (A010125), 22 (A010126), 23 (A010127), 24 (A040019), 26 (A040020), 27 (A040021), 28 (A040022), 29 (A010128),

continued fractions for constants: square roots of 2 (A040000 and A001333/A000129), 3 (A040001), 5 (A040002), 6 (A040003), 7 (A010121), 8 (A040005), 10 (A040006), 11 (A040007), 12 (A040008), 13 (A010122), 14 (A010123), 15 (A040011),

continued fractions for constants: square roots of 30 (A040024), 31 (A010129), 32 (A010130), 33 (A010131), 34 (A010132), 35 (A040029), 37 (A040030), 38 (A040031), 39 (A040032), 40 (A040033), 41 (A010133), 42 (A040035),

continued fractions for constants: square roots of 43 (A010134), 44 (A040037), 45 (A010135), 46 (A010136), 47 (A010137), 48 (A040041), 50 (A040042), 51 (A040043), 52 (A010138), 53 (A010139), 54 (A010140), 55 (A010141),

continued fractions for constants: square roots of 56 (A040048), 57 (A010142), 58 (A010143), 59 (A010144), 60 (A040052), 61 (A010145), 62 (A010146), 63 (A040055), 65 (A040056), 66 (A040057), 67 (A010147), 68 (A040059),

continued fractions for constants: square roots of 69 (A010148), 70 (A010149), 71 (A010150), 72 (A040063), 73 (A010151), 74 (A010152), 75 (A010153), 76 (A010154), 77 (A010155), 78 (A010156), 79 (A010157), 80 (A040071),

continued fractions for constants: square roots of 82 (A040072), 83 (A040073), 84 (A040074), 85 (A010158), 86 (A010159), 87 (A040077), 88 (A010160), 89 (A010161), 90 (A040080), 91 (A010162), 92 (A010163), 93 (A010164),

continued fractions for constants: square roots of 94 (A010165), 95 (A010166), 96 (A010167), 97 (A010168), 98 (A010169), 99 (A010170), etc. (square roots of numbers bigger than 100 have been omitted)

continued fractions for constants: Sum_{n>=0} 1/2^(2^n) (A007400), Sum_{k>=2} 2^(-Fibonacci(k)) (A006518), Sum_{m>=0} 1/(2^2^m - 1) (A048650)

continued fractions for constants: tan(1) (A009001), tan(1/n) n=2 to 10 (A019423+n)

continued fractions for constants: Trott's (A039663), Wallis' number (A058297), Wirsing's (A007515), prime constant (A051007), root of x^5-x-1 (A039922)

continued fractions for constants: zeta(2) = Pi^2/6 (A013679), zeta(3) (A013631), zeta(4) (A013680)

continued fractions, for sqrt(n), length of period: A003285*, A097853

contours: A006021
convenient numbers: A000926
conventions in OEIS: see spelling and notation
convergents , sequences related to :

convergents (1):: A002363, A007676, A002356, A005663, A006279, A002355, A005664, A002358, A002795, A002353, A002360, A007509, A005484, A002364

convergents (2):: A007677, A002351, A002357, A002354, A002794, A001517, A002485, A002352, A002359, A002361, A005668, A002362, A002119, A002486, A005485

convert from base 10 to base n (or vice versa): A006937 A023372 A023378 A023383 A023387 A023390 A008557 A023392 A010692
convert from decimal to binary: A006937, A006938
convex lattice polygons: A063984, A070911, A089187
convolution , sequences related to :

convolution of natural numbers :: A007466

convolution of triangular numbers :: A007465

Convolutional codes:: A007223, A007224, A007225, A007227, A007226, A007228, A007229

Convolutions:: A007477, A006013, A001938, A000385, A005798, A007556

Convolved Fibonacci numbers:: A001629, A001628, A001872, A001873, A001874, A001875

Conway , sequences related to :

Conway group Con.0: A008924

Conway sequences:: A007012, A004001, A005940, A005941, A003681, A007542, A007471, A003634, A007547, A003635

Conway, sequences made famous by: A004001*, A005150*

Conway-Guy rapidly growing sequence: A046859

Conway-Guy sequence: A005318*, A006755, A006368*, A006754, A006756, A006757

coordination sequences, sequences related to :

coordination sequences: for A_n root lattices: A005901, A008383, A008385, A008387, A008389, A008391, A008393, A008395, and A035837 through A035876

coordination sequences: for B_n root lattices: A022144 through A022154, A107546 through A107571, and A108000 through A108011

coordination sequences: for C_n root lattices: A010006, A019560 through A019564, and A035746 through A035787

coordination sequences: for D_n root lattices: A005901, A007900, A008355, A008357, A008359, A008361, A008376, A008378, and A107506 through A107545

coordination sequences: see also crystal ball sequences

coordination sequences: see also under names of individual lattices

Coprime sequences:: A003139, A003140, A002716, A002715

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