N= 25  f= 23.564444
1   1
2   0
3   0
4   0
5   1
6   1
7   1
8   0
9   0
10   1
11   0
12   0
13   1
14   0
15   1
16   1
17   0
18   0
19   0
20   0
21   0
22   1
23   0
24   0
25   0