A051051 - OEIS

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A051051 as a simple table

n	a(n)
0	1
1	12
2	143
3	648000
4	12964479
5	1721036800000
6	2077805148460987
7	5041895218133760000000
8	14154229032767142723739127
9	51951524164830314976613655528865792

[1,12,143,648000,12964479,1721036800000, 2077805148460987,5041895218133760000000, 14154229032767142723739127, 51951524164830314976613655528865792]