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A270261 as a simple table

n a(n)
1 0
2 40020
3 534438768
4 302595682944
5 67475902622400
6 4283012188676772
7 154159188959801952
8 3105816183187898208
9 44275679666499046080
10 457028430985003084500
11 3755534623771656954960
12 25194187795191181725600

[0,40020,534438768,302595682944,67475902622400,
 4283012188676772,154159188959801952,
 3105816183187898208,44275679666499046080,
 457028430985003084500,3755534623771656954960,
 25194187795191181725600]

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Last modified November 29 20:40 EST 2021. Contains 349416 sequences. (Running on oeis4.)