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A199765
as a simple table
n
a(n)
1
1
2
4
3
10
4
12
5
18
6
26
7
30
8
34
9
38
10
42
11
48
12
50
13
58
14
68
15
76
16
72
17
78
[1,4,10,12,18,26,30,34,38,42,48,50,58,68,76,72,78]