A189443 - OEIS

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A189443 as a simple table

n	a(n)
1	1
2	5
3	80
4	7300
5	2735828
6	4982424404
7	40668908306516
8	1544933702911323688
9	268632319882770483171376
10	215429706055786434110682479345
11	794334848116480290212387125594468856

[1,5,80,7300,2735828,4982424404,40668908306516, 1544933702911323688,268632319882770483171376, 215429706055786434110682479345, 794334848116480290212387125594468856]