A203264 - OEIS

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A203264 as a simple table

n	a(n)
1	1
2	4
3	72
4	2304
5	172800
6	18662400
7	3657830400
8	936404582400
9	379243855872000
10	189621927936000000
11	137665519681536000000
12	118943009004847104000000
13	140709579652734124032000000
14	193053543283551218171904000000

[1,4,72,2304,172800,18662400,3657830400, 936404582400,379243855872000,189621927936000000, 137665519681536000000,118943009004847104000000, 140709579652734124032000000, 193053543283551218171904000000]