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A137704 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 8
5 96
6 3456
7 497664
8 286654464
9 825564856320
10 11888133931008000
11 1027134771639091200000
12 532466665617704878080000000
13 1932215036193527461576704000000000 

[1,1,1,2,8,96,3456,497664,286654464,825564856320,
 11888133931008000,1027134771639091200000,
 532466665617704878080000000,
 1932215036193527461576704000000000]

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Last modified April 17 20:27 EDT 2024. Contains 371767 sequences. (Running on oeis4.)