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”).

A275723 as a simple table

na(n)
11
21
32
41
52
63
71
82
92
104
111
122
133
144
155
161
172
182
194
205
216
221
232
243
254
263
274
287
291
302
312
324
332
346
357
368
371
382
393
404
412
424
437
448
459
461
472
482
494
502
516
527
538
544
5510
561
572
583
594
605
614
627
638
649
6510
6611
671
682
692
704
715
726
737
748
754
766
7711
7812
791
802
813
824
833
844
855
868
879
884
8911
908
9113
921
932
942
954
962
976
985
998
1004
1014
10211
10312
10413
10514
1061
1072
1083
1094
1102
1114
1123
1138
1149
1154
11611
1178
11813
11914
12015

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