A324140 - OEIS

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A324140 as a simple table

n	a(n)
0	0
1	1
2	1
3	2
4	12
5	144
6	6912
7	4478976
8	150923575296
9	3091996642249801728
10	2121885128576356504259996418048
11	30493397665311618727858440951711886636410099204096

[0,1,1,2,12,144,6912,4478976,150923575296, 3091996642249801728, 2121885128576356504259996418048, 30493397665311618727858440951711886636410099204096\ ]