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A289086 as a simple table

n a(n)
0 1
1 0
2 0
3 -4
4 -16
5 -44
6 -104
7 316
8 7456
9 67620
10 458280
11 1945036
12 -8476496
13 -329703244
14 -4937610184
15 -52376610724
16 -339229127104
17 1480668009540
18 98702565516360
19 2094684947562476
20 30513682733622224
21 275602192570387156
22 -985849997324785064
23 -115940732145525976964

[1,0,0,-4,-16,-44,-104,316,7456,67620,458280,
 1945036,-8476496,-329703244,-4937610184,
 -52376610724,-339229127104,1480668009540,
 98702565516360,2094684947562476,30513682733622224,
 275602192570387156,-985849997324785064,
 -115940732145525976964]

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Last modified November 18 21:04 EST 2018. Contains 317331 sequences. (Running on oeis4.)