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A018652
as a simple table
n
a(n)
1
1
2
2
3
3
4
6
5
7
6
14
7
19
8
21
9
38
10
42
11
57
12
114
13
133
14
266
15
399
16
798
[1,2,3,6,7,14,19,21,38,42,57,114,133,266,399,798]