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A153538
as a simple table
n
a(n)
0
1
1
2
2
8
3
57
4
386
5
1941
6
27034
7
643985
8
22001658
9
944060136
10
51294296160
11
4601871901192
[1,2,8,57,386,1941,27034,643985,22001658, 944060136,51294296160,4601871901192]
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Last modified March 29 08:53 EDT 2024. Contains 371268 sequences. (Running on oeis4.)