A032324 - OEIS

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A032324 as a simple table

n	a(n)
1	5
2	20
3	240
4	3600
5	74880
6	1857600
7	56246400
8	1965600000
9	78744960000
10	3542608742400
11	177187481856000
12	9744664849920000
13	584718747604992000
14	38006232139459584000
15	2660470029606445056000

[5,20,240,3600,74880,1857600,56246400,1965600000, 78744960000,3542608742400,177187481856000, 9744664849920000,584718747604992000, 38006232139459584000,2660470029606445056000]