from __future__ import print_function
from math import exp

N = 50

x1 = 190
x2 = 260

xpp = x1
xp = x2

for n in range(3, N):
    x = 0.25*xp + 1.25*xpp
    print('x[%d]: %g' % (n, x))
    xpp = xp
    xp = x