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A125990
as a simple table
n
a(n)
0
1
1
2
2
4
3
6
4
8
5
9
6
13
7
17
8
22
9
28
10
30
11
30
12
30
13
38
14
45
15
45
16
45
17
45
18
45
19
53
20
59
21
59
22
59
23
59
24
59
[1,2,4,6,8,9,13,17,22,28,30,30,30,38,45,45,45,45, 45,53,59,59,59,59,59]