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A172921 as a simple table

n a(n)
1 0
2 0
3 406
4 11492512
5 3178005285051
6 6245350445865892320
7 71187872386623811677450179
8 3978462276964182243369639664709376
9 948836768023263746262225246333504275312592

[0,0,406,11492512,3178005285051,
 6245350445865892320,71187872386623811677450179,
 3978462276964182243369639664709376,
 948836768023263746262225246333504275312592]

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Last modified January 21 07:12 EST 2022. Contains 350473 sequences. (Running on oeis4.)