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A193939 as a simple table

na(n)
01
11
25
325
4207
51901
622323
7295597
84554763
978201805
101499474883
1131541086853
12724817679171
1318030594344725
14483229053783115
1513872831410796973
16424869901099340235
1713824490678644370109
18476299421571109945971
1917321461645693901532181
20663085324931813890398355

[1,1,5,25,207,1901,22323,295597,4554763,78201805,
 1499474883,31541086853,724817679171,
 18030594344725,483229053783115,13872831410796973,
 424869901099340235,13824490678644370109,
 476299421571109945971,17321461645693901532181,
 663085324931813890398355]