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A010408
as a simple table
n
a(n)
1
0
2
1
3
2
4
3
5
4
6
6
7
7
8
8
9
9
10
12
11
14
12
16
13
17
14
18
15
21
16
24
17
25
18
27
19
28
20
32
21
34
22
36
23
37
24
42
[0,1,2,3,4,6,7,8,9,12,14,16,17,18,21,24,25,27,28, 32,34,36,37,42]