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”).

A070651 as a simple table

na(n)
00
11
28
31
48
51
68
721
88
91
108
111
128
131
140
151
168
171
188
191
208
2121
228
231
248
251
268
271
280
291
308
311
328
331
348
3521
368
371
388
391
408
411
420
431
448
451
468
471
488
4921
508
511
528
531
548
551
560
571
588
591
608
611
628
6321
648
651
668
671
688
691
700
711
728
731
748
751
768
7721
788
791
808
811
828
831
840
851
868
871
888
891
908
9121
928
931
948
951
968
971
980
991
1008

[0,1,8,1,8,1,8,21,8,1,8,1,8,1,0,1,8,1,8,1,8,21,8,
 1,8,1,8,1,0,1,8,1,8,1,8,21,8,1,8,1,8,1,0,1,8,1,8,
 1,8,21,8,1,8,1,8,1,0,1,8,1,8,1,8,21,8,1,8,1,8,1,0,
 1,8,1,8,1,8,21,8,1,8,1,8,1,0,1,8,1,8,1,8,21,8,1,8,
 1,8,1,0,1,8]