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A302486
as a simple table
n
a(n)
1
2
2
2
3
4
4
5
5
6
6
8
7
10
8
12
9
15
10
17
11
20
12
23
13
26
14
30
15
33
16
36
17
40
18
45
19
49
20
54
21
58
22
63
23
69
24
74
[2,2,4,5,6,8,10,12,15,17,20,23,26,30,33,36,40,45, 49,54,58,63,69,74]