N= 30  f= 18.813333
1   0
2   0
3   0
4   0
5   0
6   0
7   0
8   1
9   0
10   1
11   0
12   1
13   1
14   0
15   0
16   1
17   0
18   0
19   1
20   0
21   0
22   0
23   1
24   0
25   1
26   0
27   1
28   0
29   0
30   0