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A146019 as a simple table

na(n)
11
21
31
41
51
61
73
87
915
1029
1161
12211
13895
143955
1516593
1680999
17462679
183239573
1925414255
20222500583
212101470837
2223313975471
23290908388247
244246548210105
2568354920234083

[1,1,1,1,1,1,3,7,15,29,61,211,895,3955,16593,
 80999,462679,3239573,25414255,222500583,
 2101470837,23313975471,290908388247,4246548210105,
 68354920234083]