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A241600
as a simple table
n
a(n)
0
1
1
1
2
2
3
4
4
9
5
47
6
791
7
37830
[1,1,2,4,9,47,791,37830]
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Last modified April 24 15:18 EDT 2024. Contains 371960 sequences. (Running on oeis4.)