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”).

A237049 as a simple table

na(n)
10
20
30
40
50
60
70
80
91
100
110
120
131
140
152
160
171
182
191
200
210
222
232
241
251
261
273
284
292
303
313
321
332
343
352
363
372
382
393
402
411
420
435
443
454
463
471
482
494
501
512
523
535
547
555
566
573
584
596
607
616
627
633
648
652
667
676
684
693
708
717
726
736
742
757
765
777
782
798
804
818
826
835
847
857
869
8710
885
899
907
9111
923
936
947
958
968
977
985
996
1005

[0,0,0,0,0,0,0,0,1,0,0,0,1,0,2,0,1,2,1,0,0,2,2,1,
 1,1,3,4,2,3,3,1,2,3,2,3,2,2,3,2,1,0,5,3,4,3,1,2,4,
 1,2,3,5,7,5,6,3,4,6,7,6,7,3,8,2,7,6,4,3,8,7,6,6,2,
 7,5,7,2,8,4,8,6,5,7,7,9,10,5,9,7,11,3,6,7,8,8,7,5,
 6,5]