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A197865
as a simple table
n
a(n)
1
1
2
4
3
10
4
104
5
2091
6
34283
7
1753893
8
146268275
9
16031968421
[1,4,10,104,2091,34283,1753893,146268275, 16031968421]
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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)