A243126 - OEIS

A243126 as a simple table

n	a(n)
9	1
10	0
11	10
12	10
13	65
14	120
15	395
16	890
17	2320
18	5401
19	12857
20	29435
21	66955
22	149455
23	330042
24	719882
25	1554760
26	3326365
27	7009606
28	14772370
29	30835912
30	63443345
31	130298990
32	266321547
33	538824877
34	1082905293
35	2168501310
36	4319287751
37	8538816117
38	16795672263
39	32926171923

[1,0,10,10,65,120,395,890,2320,5401,12857,29435, 66955,149455,330042,719882,1554760,3326365, 7009606,14772370,30835912,63443345,130298990, 266321547,538824877,1082905293,2168501310, 4319287751,8538816117,16795672263,32926171923]