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A242533 as a simple table

n a(n)
1 1
2 1
3 2
4 36
5 288
6 3888
7 200448
8 4257792
9 139511808
10 11813990400
11 532754620416

[1,1,2,36,288,3888,200448,4257792,139511808,
 11813990400,532754620416]

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Last modified January 20 14:13 EST 2019. Contains 319333 sequences. (Running on oeis4.)