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A342853
as a simple table
n
a(n)
0
0
1
0
2
0
3
0
4
1
5
3
6
6
7
13
8
24
9
42
10
68
11
106
12
153
13
217
14
300
[0,0,0,0,1,3,6,13,24,42,68,106,153,217,300]
