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A006143
as a simple table
n
a(n)
4
0
5
0
6
0
7
1
8
0
9
0
10
2
11
7
12
12
13
14
14
36
15
95
16
226
17
501
18
1056
19
2377
20
5448
[0,0,0,1,0,0,2,7,12,14,36,95,226,501,1056,2377, 5448]