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A137660 as a simple table

n a(n)
1 0
2 1
3 0
4 -4
5 0
6 4
7 0
8 -64
9 0
10 -320
11 0
12 384
13 0
14 -7680
15 0
16 -26880
17 0
18 -161280
19 0
20 195840
21 0
22 -3096576
23 0
24 -10321920
25 0
26 -43352064
27 0
28 -263208960
29 0
30 319979520
31 0
32 -3096576000
33 0
34 -10218700800
35 0
36 -40874803200
37 0
38 -173717913600
39 0
40 -1055932416000
41 0
42 1283840409600

[0,1,0,-4,0,4,0,-64,0,-320,0,384,0,-7680,0,-26880,
 0,-161280,0,195840,0,-3096576,0,-10321920,0,
 -43352064,0,-263208960,0,319979520,0,-3096576000,
 0,-10218700800,0,-40874803200,0,-173717913600,0,
 -1055932416000,0,1283840409600]

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Last modified November 29 14:08 EST 2020. Contains 338767 sequences. (Running on oeis4.)