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A027030 as a simple table

na(n)
31
41
55
617
757
8189
9613
101949
116097
1218825
1357525
14174353
15525049
161573077
174693909
1813960805
1941415089
20122603341
21362343053
221069436317
233152995209
249287942097
2527341397469
2680443393889
27236581555233
28695561538977

[1,1,5,17,57,189,613,1949,6097,18825,57525,174353,
 525049,1573077,4693909,13960805,41415089,
 122603341,362343053,1069436317,3152995209,
 9287942097,27341397469,80443393889,236581555233,
 695561538977]