Chalsequence

import math

sawtooth = lambda x: math.modf(x)[0]

lg3 = math.log(5, 4)

limit = 1
i = 1
m = 1
lgt = sawtooth(lg3)
running = True
while running:
    try:
        while lgt >= limit:
            lgt = sawtooth(lgt + lg3)
            m += 1
        print("%d\t%d" % (i, m))
        limit = lgt
        i += 1
    except KeyboardInterrupt:
        running = False
print("")