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A090140
as a simple table
n
a(n)
0
1
1
1
2
2
3
5
4
15
5
83
6
860
7
113147
[1,1,2,5,15,83,860,113147]
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Last modified July 26 15:02 EDT 2024. Contains 374635 sequences. (Running on oeis4.)
