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A168129 as a simple table

n a(n)
1 1
2 4
3 30
4 444
5 1767
6 86250
7 97920
8 185700
9 584640
10 21954842
11 17654544432
12 357550809280
13 709346653572
14 1061551370880

[1,4,30,444,1767,86250,97920,185700,584640,
 21954842,17654544432,357550809280,709346653572,
 1061551370880]

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)