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A146286 as a simple table

na(n)
11
21
31
41
51
61
75
813
929
1041
1199
12219
13653
141719
157125
1630115
17144385
18515791
192502679
2010851481
2166672841
22362202203
232693814149
2419415112859
25179313023913
261385523385051

[1,1,1,1,1,1,5,13,29,41,99,219,653,1719,7125,
 30115,144385,515791,2502679,10851481,66672841,
 362202203,2693814149,19415112859,179313023913,
 1385523385051]