n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 2 |
7 | 2 |
8 | 2 |
9 | 3 |
10 | 4 |
11 | 4 |
12 | 5 |
13 | 5 |
14 | 6 |
15 | 6 |
16 | 7 |
17 | 7 |
18 | 8 |
19 | 8 |
20 | 9 |
21 | 10 |
22 | 10 |
23 | 11 |
24 | 11 |
25 | 12 |
26 | 12 |
27 | 13 |
28 | 13 |
29 | 14 |
30 | 15 |
31 | 15 |
32 | 16 |
33 | 16 |
34 | 17 |
35 | 17 |
36 | 18 |
37 | 18 |
38 | 19 |
39 | 20 |
40 | 20 |
[0,0,0,1,1,2,2,2,3,4,4,5,5,6,6,7,7,8,8,9,10,10,11, 11,12,12,13,13,14,15,15,16,16,17,17,18,18,19,20, 20] |