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A367929
as a simple table
n
a(n)
1
0
2
0
3
0
4
4
5
9
6
12
7
13
8
16
9
21
10
28
11
36
12
41
13
49
14
56
15
65
[0,0,0,4,9,12,13,16,21,28,36,41,49,56,65]