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A222172
as a simple table
n
a(n)
0
0
1
1
2
2
3
3
4
5
5
8
6
10
7
11
8
13
9
17
10
21
11
24
12
29
13
36
14
40
15
41
16
43
17
47
18
53
19
61
[0,1,2,3,5,8,10,11,13,17,21,24,29,36,40,41,43,47, 53,61]