A146195 - OEIS

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A146195 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	5
6	37
7	165
8	1001
9	4705
10	34363
11	367959
12	6088505
13	78978585
14	2279840895
15	57010330201
16	2094575171305
17	78104783670439

[1,1,1,1,5,37,165,1001,4705,34363,367959,6088505, 78978585,2279840895,57010330201,2094575171305, 78104783670439]