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A140296 as a simple table

n a(n)
1 1
2 5
3 18
4 124
5 866
6 7622
7 72256
8 749892
9 8229721

[1,5,18,124,866,7622,72256,749892,8229721]

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Last modified August 15 09:40 EDT 2024. Contains 375173 sequences. (Running on oeis4.)