A145773 - OEIS

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A145773 as a simple table

n	a(n)
1	1
2	5
3	25
4	314
5	7358
6	349511
7	32855368
8	6141909014
9	2284689480141
10	1689669248970784
11	2485350221377308028
12	7269523179423750332937
13	42286820404292801713317670
14	489171492515135237008883532896

[1,5,25,314,7358,349511,32855368,6141909014, 2284689480141,1689669248970784, 2485350221377308028,7269523179423750332937, 42286820404292801713317670, 489171492515135237008883532896]