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A133596 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 32
5 280
6 3192
7 43344
8 690496
9 12726144
10 266222880
11 6222163200
12 160658284800
13 4542751030272
14 139616399952512
15 4634016219678720
16 165191949394008064
17 6294553527003086848
18 255316547059075256832

[0,1,2,6,32,280,3192,43344,690496,12726144,
 266222880,6222163200,160658284800,4542751030272,
 139616399952512,4634016219678720,
 165191949394008064,6294553527003086848,
 255316547059075256832]

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Last modified April 24 20:06 EDT 2024. Contains 371963 sequences. (Running on oeis4.)