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A003400 as a simple table

n a(n)
1 1
2 0
3 0
4 0
5 0
6 8
7 152
8 3696
9 135004
10 7971848
11 805364776
12 144123121972 

[1,0,0,0,0,8,152,3696,135004,7971848,805364776,
 144123121972]

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Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)