Foursquare limit bug

"limit" parameter: number of returned results

1: 1
2: 1
3: 1
4: 2
5: 2
6: 2
7: 3
8: 3
9: 3
10: 3
11: 4
12: 5
13: 5
14: 5
15: 5
16: 5
17: 5
18: 6
19: 6
20: 6
21: 6
22: 6
23: 6
24: 6
25: 7
26: 8
27: 8
28: 8
29: 8
30: 8
31: 9
32: 9
33: 9
34: 10
35: 10
36: 10
37: 10
38: 10
39: 10
40: 10
41: 10
42: 10
43: 10
44: 11
45: 12
46: 13
47: 13
48: 14
49: 15
50: 15