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A177743
as a simple table
n
a(n)
1
1
2
1
3
9
4
31
5
308
6
3809
7
63995
8
1152784
9
32319312
[1,1,9,31,308,3809,63995,1152784,32319312]
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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)
