A203473 - OEIS

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A203473 as a simple table

n	a(n)
1	7
2	72
3	990
4	17160
5	360360
6	8910720
7	253955520
8	8204716800
9	296541907200
10	11861676288000
11	520431047136000
12	24858235898496000
13	1284342188088960000
14	71382386874839040000
15	4247252019052922880000

[7,72,990,17160,360360,8910720,253955520, 8204716800,296541907200,11861676288000, 520431047136000,24858235898496000, 1284342188088960000,71382386874839040000, 4247252019052922880000]