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”).

A276790 as a simple table

na(n)
00
11
22
31
40
51
62
71
81
92
101
110
121
132
141
152
161
170
181
192
201
211
222
231
240
251
262
271
280
291
302
311
321
332
341
350
361
372
381
392
401
410
421
432
441
451
462
471
480
491
502
511
521
532
541
550
561
572
581
592
601
610
621
632
641
651
662
671
680
691
702
711
720
731
742
751
761
772
781
790
801
812
821
832
841
850
861
872
881
891
902
911
920
931
942
951
962
971
980
991

[0,1,2,1,0,1,2,1,1,2,1,0,1,2,1,2,1,0,1,2,1,1,2,1,
 0,1,2,1,0,1,2,1,1,2,1,0,1,2,1,2,1,0,1,2,1,1,2,1,0,
 1,2,1,1,2,1,0,1,2,1,2,1,0,1,2,1,1,2,1,0,1,2,1,0,1,
 2,1,1,2,1,0,1,2,1,2,1,0,1,2,1,1,2,1,0,1,2,1,2,1,0,
 1]