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A190531 as a simple table

na(n)
12
25
317
457
5185
6593
71901
86121
919793
1064161
11208085
12674105
132179001
147023409
1522566269
1672268809
17230696609
18734153537
192329503653
207371475033
2123267249417
2273268609745
23230224239437
24721965697577
252259855722225

[2,5,17,57,185,593,1901,6121,19793,64161,208085,
 674105,2179001,7023409,22566269,72268809,
 230696609,734153537,2329503653,7371475033,
 23267249417,73268609745,230224239437,721965697577,
 2259855722225]