A032072 - OEIS

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A032072 as a simple table

n	a(n)
1	5
2	20
3	300
4	7200
5	180000
6	5580000
7	195300000
8	7862400000
9	353808000000
10	17713080000000
11	974219400000000
12	58468132800000000
13	3800428632000000000
14	266043625848000000000

[5,20,300,7200,180000,5580000,195300000, 7862400000,353808000000,17713080000000, 974219400000000,58468132800000000, 3800428632000000000,266043625848000000000]