A234353 - OEIS

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A234353 as a simple table

n	a(n)
4	8
5	140
6	1290
7	7374
8	32477
9	116420
10	358112
11	976063
12	2425756
13	5560046
14	11946923
15	24274195
16	46975815
17	87140153

[8,140,1290,7374,32477,116420,358112,976063, 2425756,5560046,11946923,24274195,46975815, 87140153]