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A265867 as a simple table

n a(n)
1 1
2 2
3 42
4 984
5 48216
6 2869200
7 278125200
8 31015797120
9 4991834736000
10 896085889171200
11 215916261060729600
12 56895400548095155200

[1,2,42,984,48216,2869200,278125200,31015797120,
 4991834736000,896085889171200,215916261060729600,
 56895400548095155200]

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Last modified May 23 22:02 EDT 2024. Contains 372765 sequences. (Running on oeis4.)