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A319594
as a simple table
n
a(n)
1
2
2
4
3
4
4
12
5
12
6
0
7
12
8
16
9
0
10
36
11
24
12
0
13
20
14
36
15
0
16
60
[2,4,4,12,12,0,12,16,0,36,24,0,20,36,0,60]