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A156501 as a simple table

n a(n)
2 2
3 0
4 50
5 18
6 13276
7 76680
8 40760544
9 1759663680
10 1948154942040

[2,0,50,18,13276,76680,40760544,1759663680,
 1948154942040]

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Last modified May 5 15:44 EDT 2024. Contains 372275 sequences. (Running on oeis4.)