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A299683
as a simple table
n
a(n)
1
1
2
4
3
15
4
648
5
23116
6
5740433
7
4582634341
8
9172624830461
9
66764212816377961
[1,4,15,648,23116,5740433,4582634341, 9172624830461,66764212816377961]
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Last modified April 23 02:14 EDT 2024. Contains 371906 sequences. (Running on oeis4.)