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A231296 as a simple table

na(n)
12
25
316
451
5174
6617
72223
88051
929220
10106109
11385468
121400401
135088037
1418486201
1567166528
16244037407
17886670130
183221565113
1911705027203
2042528259303
21154519400012
22561420537017
232039828499536
247411378111905

[2,5,16,51,174,617,2223,8051,29220,106109,385468,
 1400401,5088037,18486201,67166528,244037407,
 886670130,3221565113,11705027203,42528259303,
 154519400012,561420537017,2039828499536,
 7411378111905]