Loko-ciąg

loko_ciag_stats.py

#!/usr/bin/python
def get_iters_count(n):
    i = 0

    while True:
        i += 1
        # print(i, n)

        if n == 1:
            break

        if n % 2 == 0:
            n = n/2
        else:
            n = 3*n + 1

    return i


for n in xrange(1, 1024):
    iters = get_iters_count(n)

    if iters > 100:
        print("%5d %5d %s" % (n, iters, '=' * (iters / 2)))