login

A013561 as a simple table

na(n)
31
41
51
61
73
81
91
1011
1111
121
131
1431
1590
1631
171
181
1985
20544
21544
2285
231
241
25225
262997
276559
282997
29225
301

[1,1,1,1,3,1,1,11,11,1,1,31,90,31,1,1,85,544,544,
 85,1,1,225,2997,6559,2997,225,1]