#!/usr/bin/env python
"""Find `n` such as ``int(math.log(2**n, 2)) != n``."""
from __future__ import print_function

import itertools
import math
import sys


def main():
    count = 0
    for n in (i*sign for i in itertools.count() for sign in [-1, 1]):
        try: f = math.log(2**n, 2)
        except ValueError:
            print("ValueError:", n)
            count += 1
        else:
            if int(f) != n:
                count += 1
                print(n, repr(f))
        if count == 10:
            break


if __name__=="__main__":
    sys.exit(main())