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”).

A213884 as a simple table

na(n)
11
24
31
42
52
65
71
82
91
102
111
124
134
145
155
161
174
187
191
204
212
224
234
241
252
268
277
284
291
301
312
321
331
344
357
364
371
381
397
404
418
422
437
444
458
468
477
482
492
501
518
522
538
545
557
561
578
584
598
601
614
621
634
647
651
662
678
682
694
701
714
728
734
745
758
762
771
782
797
807
815
821
834
848
857
864
871
884
892
902
914
925

[1,4,1,2,2,5,1,2,1,2,1,4,4,5,5,1,4,7,1,4,2,4,4,1,
 2,8,7,4,1,1,2,1,1,4,7,4,1,1,7,4,8,2,7,4,8,8,7,2,2,
 1,8,2,8,5,7,1,8,4,8,1,4,1,4,7,1,2,8,2,4,1,4,8,4,5,
 8,2,1,2,7,7,5,1,4,8,7,4,1,4,2,2,4,5]