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A051665
as a simple table
n
a(n)
0
3
1
4
2
4
3
5
4
8
5
5
6
6
7
13
8
13
9
6
10
7
11
19
12
26
13
19
14
7
15
8
16
26
17
45
18
45
19
26
20
8
21
9
22
34
23
71
24
90
25
71
26
34
27
9
[3,4,4,5,8,5,6,13,13,6,7,19,26,19,7,8,26,45,45,26, 8,9,34,71,90,71,34,9]