login

A189241 as a simple table

na(n)
25
37
441
561
673
7547
817
919
101181
1167
126481
13398581
1429
1531
1621523361
17103
1873
192851
2041
2143
225501
2323535794707
2497
25151
2653
2719441
28430697
29523
3047763361
316883
32926510094425921
3367
34956353
35374857981681
366481
3718427
385301533
3979
4014401

[5,7,41,61,73,547,17,19,1181,67,6481,398581,29,31,
 21523361,103,73,2851,41,43,5501,23535794707,97,
 151,53,19441,430697,523,47763361,6883,
 926510094425921,67,956353,374857981681,6481,18427,
 5301533,79,14401]