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A146409 as a simple table

na(n)
11
21
31
41
51
61
71
83
99
1019
1133
1273
13235
14975
154059
1617677
1773575
18388495
192342809
2017238179
21130497747
221139591877
2310255691217
24112977046301

[1,1,1,1,1,1,1,3,9,19,33,73,235,975,4059,17677,
 73575,388495,2342809,17238179,130497747,
 1139591877,10255691217,112977046301]