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”).

A081454 as a simple table

na(n)
11
21
34
41
52
68
71
82
93
106
111
122
133
144
156
161
172
183
194
206
219
221
232
243
255
266
278
2810
291
302
313
324
335
346
358
3610
371
382
393
404
415
426
438
449
4510
461
472
483
494
505
516
527
539
5410
5514
561
572
583
594
605
617
628
639
6410
6512
6614
671
682
693
704
715
726
737
748
759
7612
7714
7815
791
802
813
824
835
846
857
868
879
8810
8911
9014
9122

[1,1,4,1,2,8,1,2,3,6,1,2,3,4,6,1,2,3,4,6,9,1,2,3,
 5,6,8,10,1,2,3,4,5,6,8,10,1,2,3,4,5,6,8,9,10,1,2,
 3,4,5,6,7,9,10,14,1,2,3,4,5,7,8,9,10,12,14,1,2,3,
 4,5,6,7,8,9,12,14,15,1,2,3,4,5,6,7,8,9,10,11,14,
 22]