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A146049 as a simple table

na(n)
11
21
31
43
513
635
7181
81303
913131
10161693
112592581
1257377381
131720164275
1469927099465
153715147371129
16261988046119405
1724980387570081613
183210146525819915095
19550205755804555982181
20125514016677735094761717

[1,1,1,3,13,35,181,1303,13131,161693,2592581,
 57377381,1720164275,69927099465,3715147371129,
 261988046119405,24980387570081613,
 3210146525819915095,550205755804555982181,
 125514016677735094761717]