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A247638
as a simple table
n
a(n)
0
1
1
1
2
6
3
42
4
313
5
2407
6
18848
7
149271
8
1191092
9
9553551
10
76910632
[1,1,6,42,313,2407,18848,149271,1191092,9553551, 76910632]
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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)