login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A100947 as a simple table

na(n)
01
11
25
31
45
51
66
73
82
91
102
1122
122
138
143
152
161
179
181
191
202
211
221
235
241
251
261
271
284
2911
302
311
321
331
341
351
362
378
381
391
401
418
428
431
445
451
463
471
481
493
501
5110
522
533
541
5518
564
571
582
596
601
611
621
631
6451
651
661
671
687
692
7039
711
728
734
741
751
761
771
7813
7915
801
811
825
831
842
855
864
871
886
891
9010
911
9213
932
942702
956
964
971
983

[1,1,5,1,5,1,6,3,2,1,2,22,2,8,3,2,1,9,1,1,2,1,1,5,
 1,1,1,1,4,11,2,1,1,1,1,1,2,8,1,1,1,8,8,1,5,1,3,1,
 1,3,1,10,2,3,1,18,4,1,2,6,1,1,1,1,51,1,1,1,7,2,39,
 1,8,4,1,1,1,1,13,15,1,1,5,1,2,5,4,1,6,1,10,1,13,2,
 2702,6,4,1,3]