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A104997 as a simple table

n a(n)
1 1
2 8
3 128
4 15360
5 3440640
6 247726080
7 653996851200
8 476109707673600
9 457065319366656000
10 43034457761906688000
11 850360885375276154880000
12 1571466916173510334218240000
13 693959790182222163590774784000
14 9021477272368888126680072192000000
15 27280947271643517695080538308608000000

[1,8,128,15360,3440640,247726080,653996851200,
 476109707673600,457065319366656000,
 43034457761906688000,850360885375276154880000,
 1571466916173510334218240000,
 693959790182222163590774784000,
 9021477272368888126680072192000000,
 27280947271643517695080538308608000000]

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Last modified November 13 10:50 EST 2019. Contains 329093 sequences. (Running on oeis4.)