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A086934 as a simple table

n a(n)
0 0
1 -1
2 -1
3 0
4 6
5 34
6 150
7 548
8 1064
9 -9620
10 -190980
11 -2379408
12 -26412408
13 -281137848
14 -2923819080
15 -29496805392
16 -277842087360
17 -2151448802448
18 -5085750338064
19 334794720634752
20 11987850975483360

[0,-1,-1,0,6,34,150,548,1064,-9620,-190980,
 -2379408,-26412408,-281137848,-2923819080,
 -29496805392,-277842087360,-2151448802448,
 -5085750338064,334794720634752,11987850975483360]

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Last modified May 3 02:34 EDT 2024. Contains 372203 sequences. (Running on oeis4.)