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”).

A354986 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
101
111
122
131
141
158
161
171
181
191
203
212
221
231
247
251
261
271
2818
291
308
311
321
3320
341
3512
363
371
381
392
4028
411
422
431
4430
4532
461
471
482
491
501
5132
523
531
541
554
566
572
581
591
608
611
621
6316
641
6548
6620
671
683
6944
7012
711
727
731
741
752
7654
7720
782
791
804
811
821
831
849
8532
861
8756
8835
891
9032
9172
9266
932
941
9572
9631
971
981
9920

[1,1,1,1,1,1,1,1,1,1,1,2,1,1,8,1,1,1,1,3,2,1,1,7,
 1,1,1,18,1,8,1,1,20,1,12,3,1,1,2,28,1,2,1,30,32,1,
 1,2,1,1,32,3,1,1,4,6,2,1,1,8,1,1,16,1,48,20,1,3,
 44,12,1,7,1,1,2,54,20,2,1,4,1,1,1,9,32,1,56,35,1,
 32,72,66,2,1,72,31,1,1,20]