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A197191 as a simple table

n a(n)
0 1
1 1
2 6
3 36
4 2206
5 150000
6 13685760
7 16794009904
8 23538338288640
9 40111742758242240
10 678603619866009600000
11 19289305175281390070751204
12 619856418580365858926902640640
13 208006459829483370218035382709089280
14 78451383926677134672195807581733722937984

[1,1,6,36,2206,150000,13685760,16794009904,
 23538338288640,40111742758242240,
 678603619866009600000,19289305175281390070751204,
 619856418580365858926902640640,
 208006459829483370218035382709089280,
 78451383926677134672195807581733722937984]

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Last modified June 24 03:36 EDT 2024. Contains 373661 sequences. (Running on oeis4.)