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A211041 as a simple table

n a(n)
1 0
2 1
3 0
4 6
5 8
6 118
7 880
8 14400
9 318220
10 10446298
11 531060152
12 39577654480
13 4465022457276
14 757302604610482
15 191605833481050984

[0,1,0,6,8,118,880,14400,318220,10446298,
 531060152,39577654480,4465022457276,
 757302604610482,191605833481050984]

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Last modified December 7 10:26 EST 2022. Contains 358656 sequences. (Running on oeis4.)