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A012127 as a simple table

n a(n)
0 1
1 0
2 -4
3 80
4 -2224
5 88960
6 -4942144
7 366928640
8 -35219691264
9 4251941253120
10 -631113275843584
11 113005305852006400
12 -24021321751206703104
13 5979261710118927892480

[1,0,-4,80,-2224,88960,-4942144,366928640,
 -35219691264,4251941253120,-631113275843584,
 113005305852006400,-24021321751206703104,
 5979261710118927892480]

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Last modified December 9 02:44 EST 2021. Contains 349625 sequences. (Running on oeis4.)