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A077613 as a simple table

n a(n)
1 0
2 1
3 4
4 24
5 144
6 1080
7 8640
8 80640
9 806400
10 9072000
11 108864000
12 1437004800
13 20118067200
14 305124019200
15 4881984307200
16 83691159552000
17 1506440871936000
18 28810681675776000
19 576213633515520000
20 12164510040883200000
21 267619220899430400000
22 6182004002776842240000

[0,1,4,24,144,1080,8640,80640,806400,9072000,
 108864000,1437004800,20118067200,305124019200,
 4881984307200,83691159552000,1506440871936000,
 28810681675776000,576213633515520000,
 12164510040883200000,267619220899430400000,
 6182004002776842240000]

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Last modified June 5 20:25 EDT 2024. Contains 373110 sequences. (Running on oeis4.)