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A002454 as a simple table

n a(n)
0 1
1 4
2 64
3 2304
4 147456
5 14745600
6 2123366400
7 416179814400
8 106542032486400
9 34519618525593600
10 13807847410237440000
11 6682998146554920960000
12 3849406932415634472960000
13 2602199086312968903720960000
14 2040124083669367620517232640000 

[1,4,64,2304,147456,14745600,2123366400,
 416179814400,106542032486400,34519618525593600,
 13807847410237440000,6682998146554920960000,
 3849406932415634472960000,
 2602199086312968903720960000,
 2040124083669367620517232640000]

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Last modified May 14 06:43 EDT 2024. Contains 372528 sequences. (Running on oeis4.)