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A075737 as a simple table

na(n)
12
25
313
489
5233
61597
728657
8514229
9433494437
102971215073
1199194853094755497
121066340417491710595814572169
1319134702400093278081449423917
14475420437734698220747368027166749382927701417016557193662268716376935476241

[2,5,13,89,233,1597,28657,514229,433494437,
 2971215073,99194853094755497,
 1066340417491710595814572169,
 19134702400093278081449423917,
 47542043773469822074736802716674938292770141701655\
 7193662268716376935476241]