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A063902 as a simple table

n a(n)
0 1
1 1
2 2
3 10
4 80
5 1000
6 17600
7 418000
8 12848000
9 496672000
10 23576960000
11 1348404640000
12 91442700800000
13 7255463564800000
14 665885747225600000
15 69994087116448000000
16 8354181454767104000000
17 1123646013779238400000000
18 169165728883243642880000000

[1,1,2,10,80,1000,17600,418000,12848000,496672000,
 23576960000,1348404640000,91442700800000,
 7255463564800000,665885747225600000,
 69994087116448000000,8354181454767104000000,
 1123646013779238400000000,
 169165728883243642880000000]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)