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A271851
as a simple table
n
a(n)
1
1
2
3
3
23
4
426
5
21010
6
2422412
7
656536622
8
403782014944
9
553766164923422
[1,3,23,426,21010,2422412,656536622,403782014944, 553766164923422]
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Last modified May 1 17:11 EDT 2024. Contains 372175 sequences. (Running on oeis4.)