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A228173 as a simple table

n a(n)
1 1
2 2
3 12
4 108
5 1320
6 20280
7 374640
8 8072400
9 198465120
10 5475284640
11 167285321280
12 5600184004800
13 203602252613760
14 7978382871338880
15 334767145102790400
16 14952953514231532800
17 707221717016278464000
18 35242469168705967168000
19 1841491290250262851200000

[1,2,12,108,1320,20280,374640,8072400,198465120,
 5475284640,167285321280,5600184004800,
 203602252613760,7978382871338880,
 334767145102790400,14952953514231532800,
 707221717016278464000,35242469168705967168000,
 1841491290250262851200000]

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Last modified April 24 05:26 EDT 2024. Contains 371918 sequences. (Running on oeis4.)