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A140306 as a simple table

n a(n)
0 1
1 2
2 15
3 130
4 4852
5 456904
6 73948482
7 35616138799
8 43142990277818
9 115017363443317954
10 771239506285440035857

[1,2,15,130,4852,456904,73948482,35616138799,
 43142990277818,115017363443317954,
 771239506285440035857]

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Last modified February 26 15:32 EST 2024. Contains 370352 sequences. (Running on oeis4.)