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A167368 as a simple table

n a(n)
1 1
2 3
3 12
4 159120
5 6686252969760
6 89050715142739003008099466232718435351438398888454549774336000

[1,3,12,159120,6686252969760,
 89050715142739003008099466232718435351438398888454\
 549774336000]

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Last modified December 13 23:26 EST 2018. Contains 318087 sequences. (Running on oeis4.)