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A125823 as a simple table

n a(n)
1 0
2 4
3 32
4 228
5 1600
6 11204
7 78432
8 549028
9 3843200
10 26902404
11 188316832
12 1318217828
13 9227524800
14 64592673604
15 452148715232
16 3165041006628
17 22155287046400
18 155087009324804
19 1085609065273632
20 7599263456915428
21 53194844198408000
22 372363909388856004
23 2606547365721992032

[0,4,32,228,1600,11204,78432,549028,3843200,
 26902404,188316832,1318217828,9227524800,
 64592673604,452148715232,3165041006628,
 22155287046400,155087009324804,1085609065273632,
 7599263456915428,53194844198408000,
 372363909388856004,2606547365721992032]

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Last modified April 24 14:09 EDT 2024. Contains 371960 sequences. (Running on oeis4.)