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A250220
as a simple table
n
a(n)
1
7
2
9
3
12
4
16
5
17
6
18
7
26
8
34
9
36
10
38
11
39
12
42
13
49
14
74
15
114
16
118
17
337
18
396
19
455
[7,9,12,16,17,18,26,34,36,38,39,42,49,74,114,118, 337,396,455]