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A107251 as a simple table

n a(n)
0 1
1 1
2 12
3 7200
4 508032000
5 7742895390720000
6 40797452088662556672000000
7 108985983996792124183843071590400000000
8 203800994173724454677862841368011757060096000000000000 

[1,1,12,7200,508032000,7742895390720000,
 40797452088662556672000000,
 108985983996792124183843071590400000000,
 20380099417372445467786284136801175706009600000000\
 0000]

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Last modified July 14 20:49 EDT 2024. Contains 374323 sequences. (Running on oeis4.)