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A145953 as a simple table

na(n)
11
21
31
41
57
611
7159
8327
95133
1013861
11849385
123108015
13457381857
142235253839
15607242639437
163907846853149
172764340116761305
1823642760363071615
1940211844595990066697
20457112748895519083981
211725707575657931227023395

[1,1,1,1,7,11,159,327,5133,13861,849385,3108015,
 457381857,2235253839,607242639437,3907846853149,
 2764340116761305,23642760363071615,
 40211844595990066697,457112748895519083981,
 1725707575657931227023395]