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A124638
as a simple table
n
a(n)
0
1
1
0
2
3
3
4
4
12
5
20
6
45
7
80
8
168
9
296
10
573
11
1012
12
1874
13
3268
14
5824
15
10020
16
17338
17
29308
18
49511
19
82168
[1,0,3,4,12,20,45,80,168,296,573,1012,1874,3268, 5824,10020,17338,29308,49511,82168]