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A151993 as a simple table

n a(n)
1 0
2 0
3 3
4 63
5 410
6 2949
7 21622
8 175504
9 1478015
10 12330087
11 107585476
12 937135794 

[0,0,3,63,410,2949,21622,175504,1478015,12330087,
 107585476,937135794]

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Last modified September 1 18:06 EDT 2024. Contains 375593 sequences. (Running on oeis4.)