A127888 - OEIS

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A127888 as a simple table

n	a(n)
1	0
2	478483200
3	6401339808768000
4	620429964386047303680000
5	265250626231132937174895820800000
6	371992180902371387782970387300352000000000

[0,478483200,6401339808768000, 620429964386047303680000, 265250626231132937174895820800000, 371992180902371387782970387300352000000000]