N= 25  f= 19.856667
1   0
2   1
3   1
4   0
5   1
6   0
7   0
8   1
9   1
10   0
11   1
12   1
13   0
14   0
15   0
16   1
17   0
18   1
19   1
20   0
21   1
22   1
23   0
24   0
25   0