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”).

A284694 as a simple table

na(n)
11
22
33
42
55
62
77
82
92
102
1111
122
1313
142
153
162
1717
182
1919
202
213
222
2323
242
252
262
273
282
2929
302
3131
322
333
342
355
362
3737
382
393
402
4141
422
4343
442
452
462
4747
482
492
502
513
522
5353
542
555
562
573
582
5959
602
6161
622
632
642
655
662
6767
682
693
702
7171
722
7373
742
752
762
777
782
7979
802
812

[1,2,3,2,5,2,7,2,2,2,11,2,13,2,3,2,17,2,19,2,3,2,
 23,2,2,2,3,2,29,2,31,2,3,2,5,2,37,2,3,2,41,2,43,2,
 2,2,47,2,2,2,3,2,53,2,5,2,3,2,59,2,61,2,2,2,5,2,
 67,2,3,2,71,2,73,2,2,2,7,2,79,2,2]