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A225556
as a simple table
n
a(n)
3
7
4
14
5
13
6
22
7
21
8
33
9
29
10
47
11
39
12
64
13
50
14
78
15
63
16
93
17
76
18
112
19
90
20
131
21
105
22
151
23
121
24
171
[7,14,13,22,21,33,29,47,39,64,50,78,63,93,76,112, 90,131,105,151,121,171]