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A077611 as a simple table

n a(n)
1 0
2 0
3 4
4 12
5 144
6 720
7 8640
8 60480
9 806400
10 7257600
11 108864000
12 1197504000
13 20118067200
14 261534873600
15 4881984307200
16 73229764608000
17 1506440871936000
18 25609494822912000
19 576213633515520000
20 10948059036794880000
21 267619220899430400000
22 5620003638888038400000

[0,0,4,12,144,720,8640,60480,806400,7257600,
 108864000,1197504000,20118067200,261534873600,
 4881984307200,73229764608000,1506440871936000,
 25609494822912000,576213633515520000,
 10948059036794880000,267619220899430400000,
 5620003638888038400000]

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)