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A263988 as a simple table

n a(n)
1 1
2 4
3 64
4 1728
5 104976
6 21870000
7 12656250000
8 16588800000000
9 55662776156160000
10 524753103350661120000
11 13063269877417673072640000
12 823784380246050405868707840000
13 135558605263753575626189314498560000 

[1,4,64,1728,104976,21870000,12656250000,
 16588800000000,55662776156160000,
 524753103350661120000,13063269877417673072640000,
 823784380246050405868707840000,
 135558605263753575626189314498560000]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)