A242087 - OEIS

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A242087 as a simple table

n	a(n)
0	1
1	0
2	6
3	6
4	36
5	88
6	376
7	1096
8	4476
9	14200
10	57284
11	190206
12	764812
13	2615268
14	10499504
15	36677626
16	147110276
17	522288944

[1,0,6,6,36,88,376,1096,4476,14200,57284,190206, 764812,2615268,10499504,36677626,147110276, 522288944]