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”).

A205790 as a simple table

na(n)
11
21
31
41
51
62
73
81
94
101
115
122
132
146
151
161
171
183
199
201
212
2210
2311
242
253
261
273
286
292
302
3115
323
334
343
353
363
371
3818
391
401
414
424
4321
4410
453
4622
4723
482
497
501
511
521
532
543
554
566
578
583
5929
602
615
6230
631
642
652
668
6733
683
6910
706
7135
723
733
745
751
7618
772
781
7939
801
813
821
8341
844
851
8642
872
8810
895
903

[1,1,1,1,1,2,3,1,4,1,5,2,2,6,1,1,1,3,9,1,2,10,11,
 2,3,1,3,6,2,2,15,3,4,3,3,3,1,18,1,1,4,4,21,10,3,
 22,23,2,7,1,1,1,2,3,4,6,8,3,29,2,5,30,1,2,2,8,33,
 3,10,6,35,3,3,5,1,18,2,1,39,1,3,1,41,4,1,42,2,10,
 5,3]