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A162764
as a simple table
n
a(n)
1
0
2
2
3
4
4
6
5
8
6
10
7
12
8
14
9
16
10
22
11
26
12
32
13
36
14
40
15
44
[0,2,4,6,8,10,12,14,16,22,26,32,36,40,44]