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A091687 as a simple table

n a(n)
1 1
2 2
3 7
4 60
5 3444
6 11402948
7 129187106461769

[1,2,7,60,3444,11402948,129187106461769]

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Last modified June 25 15:24 EDT 2024. Contains 373705 sequences. (Running on oeis4.)