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A177138 as a simple table

n a(n)
1 1
2 3
3 12
4 60
5 360
6 2520
7 20160
8 19958400
9 239500800
10 3113510400
11 43589145600
12 177843714048000
13 3201186852864000
14 60822550204416000
15 1216451004088320000
16 12926008369442488320000
17 310224200866619719680000
18 4420880996869850977271808000000

[1,3,12,60,360,2520,20160,19958400,239500800,
 3113510400,43589145600,177843714048000,
 3201186852864000,60822550204416000,
 1216451004088320000,12926008369442488320000,
 310224200866619719680000,
 4420880996869850977271808000000]

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Last modified April 25 13:34 EDT 2024. Contains 371971 sequences. (Running on oeis4.)