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A090586 as a simple table

n a(n)
1 1
2 2
3 1
4 12
5 8
6 240
7 180
8 1120
9 8064
10 725760
11 604800
12 79833600
13 68428800
14 830269440
15 10897286400
16 2615348736000
17 2324754432000
18 711374856192000
19 640237370572800
20 11585247657984000
21 221172909834240000
22 102181884343418880000
23 93666727314800640000

[1,2,1,12,8,240,180,1120,8064,725760,604800,
 79833600,68428800,830269440,10897286400,
 2615348736000,2324754432000,711374856192000,
 640237370572800,11585247657984000,
 221172909834240000,102181884343418880000,
 93666727314800640000]

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Last modified August 15 13:20 EDT 2020. Contains 336504 sequences. (Running on oeis4.)