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A066318 as a simple table

n a(n)
1 2
2 4
3 16
4 96
5 768
6 7680
7 92160
8 1290240
9 20643840
10 371589120
11 7431782400
12 163499212800
13 3923981107200
14 102023508787200
15 2856658246041600
16 85699747381248000
17 2742391916199936000
18 93241325150797824000
19 3356687705428721664000
20 127554132806291423232000

[2,4,16,96,768,7680,92160,1290240,20643840,
 371589120,7431782400,163499212800,3923981107200,
 102023508787200,2856658246041600,
 85699747381248000,2742391916199936000,
 93241325150797824000,3356687705428721664000,
 127554132806291423232000]

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Last modified January 20 23:20 EST 2019. Contains 319343 sequences. (Running on oeis4.)