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A012860 as a simple table

n a(n)
0 0
1 -1
2 1
3 -61
4 17
5 -1021
6 691
7 -32762
8 929569
9 -1045394477
10 221930581
11 -651651769166
12 56963745931
13 -88306000053182
14 2093660879252671
15 -321780490474593819308
16 129848163681107301953
17 -2604961188011595075731
18 209390615747646519456961
19 -7707087027623315087276182
20 16103843159579478297227731

[0,-1,1,-61,17,-1021,691,-32762,929569,
 -1045394477,221930581,-651651769166,56963745931,
 -88306000053182,2093660879252671,
 -321780490474593819308,129848163681107301953,
 -2604961188011595075731,209390615747646519456961,
 -7707087027623315087276182,
 16103843159579478297227731]

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Last modified December 2 15:42 EST 2022. Contains 358510 sequences. (Running on oeis4.)