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A007545
as a simple table
n
a(n)
0
1
1
20
2
400
3
8902
4
197742
5
4897256
6
120921506
7
3284294545
8
88867026005
[1,20,400,8902,197742,4897256,120921506, 3284294545,88867026005]
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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)