A012729 - OEIS

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A012729 as a simple table

n	a(n)
0	2
1	328
2	1402272
3	34476662400
4	2862572968849920
5	606547177566513039360
6	275433333396552433711226880
7	237761902453820639998996848476160

[2,328,1402272,34476662400,2862572968849920, 606547177566513039360,275433333396552433711226880, 237761902453820639998996848476160]