A102073 - OEIS

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A102073 as a simple table

n	a(n)
1	1
2	-1
3	220
4	-830
5	51280
6	-24271600
7	2978372800
8	-72656038000
9	6574942704928000
10	-369025338813664000
11	439973927875730560000
12	-16173932272478277440000
13	8586787143256164544000000

[1,-1,220,-830,51280,-24271600,2978372800, -72656038000,6574942704928000,-369025338813664000, 439973927875730560000,-16173932272478277440000, 8586787143256164544000000]