login

A183109 as a simple table

na(n)
11
21
37
41
525
6265
71
879
92161
1041503
111
12241
1316081
14693601
1524997921
161
17727
18115465
1910924399
20831719761
2157366997447
221
232185
24816985
25167578321
2626666530801
273776451407065
28505874809287625

[1,1,7,1,25,265,1,79,2161,41503,1,241,16081,
 693601,24997921,1,727,115465,10924399,831719761,
 57366997447,1,2185,816985,167578321,26666530801,
 3776451407065,505874809287625]