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A012178 as a simple table

n a(n)
0 1
1 -1
2 -15
3 -561
4 -38623
5 -4206881
6 -661302639
7 -140958927825
8 -38921417469119
9 -13433349471318337
10 -5625858245527551439
11 -2783882722627688439921
12 -1585166024021465157765535

[1,-1,-15,-561,-38623,-4206881,-661302639,
 -140958927825,-38921417469119,-13433349471318337,
 -5625858245527551439,-2783882722627688439921,
 -1585166024021465157765535]

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Last modified October 3 14:07 EDT 2023. Contains 365866 sequences. (Running on oeis4.)