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”).

A137876 as a simple table

na(n)
11
23
33
41
54
61
77
85
93
101
111
126
133
143
151
165
177
187
195
204
213
224
235
241
254
266
274
283
291
309
313
323
333
343
356
363
376
384
394
404
413
423
437
445
451
461
477
487
491
5010
514
524
537
543
554
566
575
585
591
609
613
624
6311
641
654
663
676
683
696
709
711
723
736
7417
7517
763
779
785
797
804
813
825
833
846
854
863
874
887
893
901
9110
9210
9312
9412
956
965
973
989
993
1006
1016

[1,3,3,1,4,1,7,5,3,1,1,6,3,3,1,5,7,7,5,4,3,4,5,1,
 4,6,4,3,1,9,3,3,3,3,6,3,6,4,4,4,3,3,7,5,1,1,7,7,1,
 10,4,4,7,3,4,6,5,5,1,9,3,4,11,1,4,3,6,3,6,9,1,3,6,
 17,17,3,9,5,7,4,3,5,3,6,4,3,4,7,3,1,10,10,12,12,6,
 5,3,9,3,6,6]