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”).

A272210 as a simple table

na(n)
11
21
31
42
51
62
73
81
91
102
111
122
134
141
154
165
171
181
192
200
211
223
232
242
253
266
271
286
297
301
311
322
331
342
354
361
372
384
398
401
412
423
434
446
459
461
471
482
492
503
515
520
532
545
5510
561
5710
5811
591
601
612
620
631
643
650
660
671
684
691
701
711
722
736
741
752
763
774
786
7912
801
8112
8213
831
841
852
864
875
887
89-2
902
917
9214
931
942
953
960
972
985
998
1008
10110
10215

[1,1,1,2,1,2,3,1,1,2,1,2,4,1,4,5,1,1,2,0,1,3,2,2,
 3,6,1,6,7,1,1,2,1,2,4,1,2,4,8,1,2,3,4,6,9,1,1,2,2,
 3,5,0,2,5,10,1,10,11,1,1,2,0,1,3,0,0,1,4,1,1,1,2,
 6,1,2,3,4,6,12,1,12,13,1,1,2,4,5,7,-2,2,7,14,1,2,
 3,0,2,5,8,8,10,15]