A152708 - OEIS

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A152708 as a simple table

n	a(n)
1	1
2	2
3	6
4	24
5	120
6	720
7	5040
8	40320
9	362880
10	3421440
11	35166240
12	389352960
13	4694073888
14	60648751360
15	847015485216
16	12403530135936

[1,2,6,24,120,720,5040,40320,362880,3421440, 35166240,389352960,4694073888,60648751360, 847015485216,12403530135936]