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A033981 as a simple table

n a(n)
1 1
2 5
3 25
4 1727
5 3830879
6 33554425
7 19584403931
8 25086500333
9 23476467919565
10 4463061944990945

[1,5,25,1727,3830879,33554425,19584403931,
 25086500333,23476467919565,4463061944990945]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)