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A197790
as a simple table
n
a(n)
1
1
2
1
3
13
4
52
5
786
6
25425
7
808145
8
82768814
9
12208450292
10
3222958108566
[1,1,13,52,786,25425,808145,82768814,12208450292, 3222958108566]
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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)