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A302303
as a simple table
n
a(n)
1
1
2
3
3
13
4
66
5
445
6
5715
7
76642
8
2150420
9
124691962
10
17216491876
[1,3,13,66,445,5715,76642,2150420,124691962, 17216491876]
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Last modified March 4 05:42 EST 2021. Contains 341779 sequences. (Running on oeis4.)