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A254433 as a simple table

n a(n)
1 1
2 1
3 3
4 12
5 140
6 3950
7 263707
8 42285095
9 16825391023
10 17095967464466
11 45375565948693336 

[1,1,3,12,140,3950,263707,42285095,16825391023,
 17095967464466,45375565948693336]

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Last modified July 31 20:34 EDT 2024. Contains 374808 sequences. (Running on oeis4.)