A203701 - OEIS

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A203701 as a simple table

n	a(n)
1	1
2	5
3	650
4	16663400
5	478518525316000
6	113232587986394983843360000
7	1438710315085989348124673236473864000000000
8	6858373830854236318613852813305507279474257818061600000000000000

[1,5,650,16663400,478518525316000, 113232587986394983843360000, 1438710315085989348124673236473864000000000, 68583738308542363186138528133055072794742578180616\ 00000000000000]