A120264 - OEIS

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A120264 as a simple table

n	a(n)
1	1
2	3
3	85
4	5413
5	16922537
6	456895999
7	376274084904457
8	24659496552164597077
9	13105067550356276873597957
10	40953336089635928267832533257
11	11684464736880059106484670339210887010027

[1,3,85,5413,16922537,456895999,376274084904457, 24659496552164597077,13105067550356276873597957, 40953336089635928267832533257, 11684464736880059106484670339210887010027]