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A293143 as a simple table

n a(n)
0 4
1 16
2 96
3 688
4 5280
5 41584
6 330720
7 2639920
8 21101856
9 168762352
10 1349941344
11 10799058352
12 86391049632
13 691124145520
14 5528980409568
15 44231805012784
16 353854325311008
17 2830834258114288
18 22646673031792992
19 181173381154980016

[4,16,96,688,5280,41584,330720,2639920,21101856,
 168762352,1349941344,10799058352,86391049632,
 691124145520,5528980409568,44231805012784,
 353854325311008,2830834258114288,
 22646673031792992,181173381154980016]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)