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A220840
as a simple table
n
a(n)
1
1
2
1
3
2
4
5
5
16
6
68
7
403
8
3791
9
65561
10
2258313
[1,1,2,5,16,68,403,3791,65561,2258313]
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Last modified August 24 13:25 EDT 2024. Contains 375410 sequences. (Running on oeis4.)
