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”).

A332881 as a simple table

na(n)
11
22
33
42
55
61
77
82
93
105
1111
121
1313
147
155
162
1717
181
1919
205
2121
2211
2323
241
255
2613
273
287
2929
305
3131
322
3311
3417
3535
361
3737
3819
3939
405
4141
427
4343
4411
455
4623
4747
481
497
505
5117
5213
5353
541
5555
567
5757
5829
5959
605
6161
6231
6321
642
6565
6611
6767
6817
6923
7035

[1,2,3,2,5,1,7,2,3,5,11,1,13,7,5,2,17,1,19,5,21,
 11,23,1,5,13,3,7,29,5,31,2,11,17,35,1,37,19,39,5,
 41,7,43,11,5,23,47,1,7,5,17,13,53,1,55,7,57,29,59,
 5,61,31,21,2,65,11,67,17,23,35]