A261427 - OEIS

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A261427 as a simple table

n	a(n)
0	1
1	720
2	889574400
3	24825530695680000
4	5290995845684330496000000
5	5123434663327851951402516480000000
6	16586604100059403377645257954741452800000000
7	146550752102252281868362306608987740351496192000000000

[1,720,889574400,24825530695680000, 5290995845684330496000000, 5123434663327851951402516480000000, 16586604100059403377645257954741452800000000, 14655075210225228186836230660898774035149619200000\ 0000]