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A103297
as a simple table
n
a(n)
0
1
1
1
2
2
3
3
4
3
5
4
6
4
7
6
8
6
9
7
10
7
11
7
12
8
13
10
14
11
15
11
16
11
17
11
18
11
19
13
20
14
21
15
22
15
23
16
24
14
25
19
[1,1,2,3,3,4,4,6,6,7,7,7,8,10,11,11,11,11,11,13, 14,15,15,16,14,19]