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A091634 as a simple table

n a(n)
1 4
2 25
3 153
4 1010
5 7122
6 52313
7 397866
8 3103348
9 24649318
10 198536215
11 1616808581
12 13287264748
13 110033428309
14 917072930187 

[4,25,153,1010,7122,52313,397866,3103348,24649318,
 198536215,1616808581,13287264748,110033428309,
 917072930187]

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Last modified April 24 07:54 EDT 2024. Contains 371922 sequences. (Running on oeis4.)