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A049013
as a simple table
n
a(n)
1
5
2
7
3
9
4
11
5
13
6
15
7
17
8
19
9
21
10
23
11
25
12
27
13
29
14
31
15
33
16
35
17
37
18
39
19
41
20
43
21
45
22
47
23
49
24
51
[5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37, 39,41,43,45,47,49,51]