A152372 - OEIS

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A152372 as a simple table

n	a(n)
1	1
2	2
3	6
4	24
5	120
6	720
7	5040
8	37248
9	311256
10	2830368
11	28685456
12	307302656
13	3744207972
14	48232689632
15	668100774772
16	9819878376880

[1,2,6,24,120,720,5040,37248,311256,2830368, 28685456,307302656,3744207972,48232689632, 668100774772,9819878376880]