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A171010 as a simple table

n a(n)
1 0
2 0
3 1
4 7
5 46
6 240
7 1207
8 6004
9 28903
10 137996

[0,0,1,7,46,240,1207,6004,28903,137996]

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Last modified October 30 06:31 EDT 2020. Contains 338077 sequences. (Running on oeis4.)