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A264292
as a simple table
n
a(n)
0
0
1
0
2
1
3
2
4
4
5
7
6
15
7
26
8
55
9
101
10
221
11
413
12
870
13
1673
14
3490
[0,0,1,2,4,7,15,26,55,101,221,413,870,1673,3490]