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A264795 as a simple table

n a(n)
1 1
2 3
3 15
4 130
5 1944
6 40188
7 1149120
8 49148112
9 2541311040
10 156667403520
11 11530576378368

[1,3,15,130,1944,40188,1149120,49148112,
 2541311040,156667403520,11530576378368]

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Last modified June 28 12:00 EDT 2022. Contains 354907 sequences. (Running on oeis4.)