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”).

A263569 as a simple table

na(n)
10
21
32
41
52
62
72
81
92
101
112
122
132
141
153
161
172
182
192
202
212
221
232
242
251
261
272
282
292
303
312
321
332
341
352
362
372
381
392
401
412
423
432
441
453
461
472
482
492
502
512
521
532
542
551
561
572
581
592
603
612
621
633
641
652
663
672
681
692
702
712
722
732
741
753
761
772
782
792
802
812
821
832
843
851
861
872
881
892
903
912
921
932
941
952
962
972
981
993
1001
1012
1022
1032
1041
1054

[0,1,2,1,2,2,2,1,2,1,2,2,2,1,3,1,2,2,2,2,2,1,2,2,
 1,1,2,2,2,3,2,1,2,1,2,2,2,1,2,1,2,3,2,1,3,1,2,2,2,
 2,2,1,2,2,1,1,2,1,2,3,2,1,3,1,2,3,2,1,2,2,2,2,2,1,
 3,1,2,2,2,2,2,1,2,3,1,1,2,1,2,3,2,1,2,1,2,2,2,1,3,
 1,2,2,2,1,4]