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A109478 as a simple table

n a(n)
0 1
1 0
2 0
3 248
4 527
5 248
6 -30752
7 -130696
8 -200368
9 7495800
10 48588160
11 126194552
12 -2193794608
13 -19969622408
14 -73463606560
15 669830215672
16 8531080372112
17 41019957975544
18 -191778551466496
19 -3690237269626888
20 -22269949433683824
21 41136485483971064
22 1589563554053105888

[1,0,0,248,527,248,-30752,-130696,-200368,7495800,
 48588160,126194552,-2193794608,-19969622408,
 -73463606560,669830215672,8531080372112,
 41019957975544,-191778551466496,-3690237269626888,
 -22269949433683824,41136485483971064,
 1589563554053105888]

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Last modified May 21 09:30 EDT 2022. Contains 353908 sequences. (Running on oeis4.)