public

rdhyee / triangular.py

Created 2013-05-22

from itertools import islice
 
def triangular():
    n = 1
    i = 1
    while True:
        yield n
        i +=1
        n += i
 
# <codecell>
 
for i, n in enumerate(islice(triangular(), 10)):
    print i+1, n