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A178291 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 2687088
6 79355392
7 1008580720
8 7955368960
9 55993694000
10 284540909568
11 1291577484720
12 4756123165696

[0,0,0,0,2687088,79355392,1008580720,7955368960,
 55993694000,284540909568,1291577484720,
 4756123165696]

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Last modified August 8 21:43 EDT 2022. Contains 356016 sequences. (Running on oeis4.)