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A012160 as a simple table

n a(n)
0 1
1 0
2 -4
3 -136
4 272
5 -222016
6 21267520
7 -3836913536
8 874251520256
9 -254117293340672
10 92635637659667456
11 -41075111126460016640
12 21845766688887149694976
13 -13711633858766326011314176

[1,0,-4,-136,272,-222016,21267520,-3836913536,
 874251520256,-254117293340672,92635637659667456,
 -41075111126460016640,21845766688887149694976,
 -13711633858766326011314176]

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)