login

A130227 as a simple table

na(n)
11
21
31
41
55
61
71
813
91
105
111
1225
1313
143805
151
16125
175
181
1941
2053
21569
221
23389
24851525
2573
261
2761
285
29149
301
319305
32385645
331
3485
3582596761
365
37126985
381
39221
4017
411
42113
431517
444574225
45281

[1,1,1,1,5,1,1,13,1,5,1,25,13,3805,1,125,5,1,41,
 53,569,1,389,851525,73,1,61,5,149,1,9305,385645,1,
 85,82596761,5,126985,1,221,17,1,113,1517,4574225,
 281]