login

A291471 as a simple table

na(n)
131
226
321
426
531
66
77
88
99
1010
1111
126
1313
147
1515
168
1717
186
1919
2010
217
2211
2323
246
2525
2613
279
287
2929
306
3131
328
3311
3417
357
366
3731
3819
3913
408
4131
426
4331
4411
459
4623
4731
486
497
5010
5117
5213
5331
546
5511
567
5719
5826
5931
606
6131
6226
637
648
6513
666
6731
6817
6921
707

[31,26,21,26,31,6,7,8,9,10,11,6,13,7,15,8,17,6,19,
 10,7,11,23,6,25,13,9,7,29,6,31,8,11,17,7,6,31,19,
 13,8,31,6,31,11,9,23,31,6,7,10,17,13,31,6,11,7,19,
 26,31,6,31,26,7,8,13,6,31,17,21,7]