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A141742
as a simple table
n
a(n)
0
3
1
6
2
7
3
12
4
13
5
14
6
15
7
24
8
25
9
26
10
27
11
28
12
29
13
30
[3,6,7,12,13,14,15,24,25,26,27,28,29,30]
