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A291819 as a simple table

n a(n)
1 1
2 4
3 24
4 196
5 1944
6 21944
7 272080
8 3627412
9 51288200
10 761782104
11 11805102064
12 189901153112
13 3158767322992
14 54165347282960
15 955189096759776
16 17289056525343716
17 320678326091307448
18 6087009196570756488
19 118109764108446889008
20 2340448760238788518488
21 47324471620802426563376
22 975739573623235107473968
23 20500725692629852174532192
24 438679922664144046444438488
25 9555430871381022848971028208

[1,4,24,196,1944,21944,272080,3627412,51288200,
 761782104,11805102064,189901153112,3158767322992,
 54165347282960,955189096759776,17289056525343716,
 320678326091307448,6087009196570756488,
 118109764108446889008,2340448760238788518488,
 47324471620802426563376,975739573623235107473968,
 20500725692629852174532192,
 438679922664144046444438488,
 9555430871381022848971028208]

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Last modified March 5 09:09 EST 2024. Contains 370545 sequences. (Running on oeis4.)