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A151913
as a simple table
n
a(n)
1
7
2
9
3
10
4
12
5
14
6
20
7
23
8
24
9
29
10
44
11
108
12
2049
13
3072
14
4862
15
8807
16
15089
[7,9,10,12,14,20,23,24,29,44,108,2049,3072,4862, 8807,15089]