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A105467
as a simple table
n
a(n)
1
0
2
0
3
5
4
22
5
91
6
286
7
863
8
2577
9
7717
10
23160
11
69939
12
209485
13
627826
14
1881554
15
5645226
16
16936048
[0,0,5,22,91,286,863,2577,7717,23160,69939,209485, 627826,1881554,5645226,16936048]