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A032320 as a simple table

n a(n)
1 2
2 2
3 12
4 126
5 1800
6 33540
7 757680
8 20149290
9 616940520
10 21378058800
11 827126546400
12 35346832387020
13 1653593623521840
14 84055016334088800
15 4613207941230688800
16 271883701342581277950
17 17125855412989960236600
18 1148187688612239672677280
19 81635218693106948988998880 

[2,2,12,126,1800,33540,757680,20149290,616940520,
 21378058800,827126546400,35346832387020,
 1653593623521840,84055016334088800,
 4613207941230688800,271883701342581277950,
 17125855412989960236600,1148187688612239672677280,
 81635218693106948988998880]

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Last modified May 17 19:53 EDT 2024. Contains 372607 sequences. (Running on oeis4.)