A269220 - OEIS

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A269220 as a simple table

n	a(n)
1	0
2	7375872
3	2039727744
4	599456856000
5	163535201141376
6	43468685827935816
7	11273191243423937904
8	2872961996154823592256
9	722010748558146090563664
10	179436639887553691981747008
11	44187481124719769649267286128

[0,7375872,2039727744,599456856000, 163535201141376,43468685827935816, 11273191243423937904,2872961996154823592256, 722010748558146090563664, 179436639887553691981747008, 44187481124719769649267286128]