Last quiz from a day in the life of an application http://class.stanford.edu/networking/Fall2012/videos/day_app

gistfile1.py

def T(n):
   ....:     #base case
   ....:     if n == 1:
   ....:         return 1000
   ....:     else:
   ....:         return 1000 + T(n-1)*2
   ....:     

In [32]: T(1)
Out[32]: 1000

In [33]: T(2)
Out[33]: 3000

In [34]: T(3)
Out[34]: 7000

In [35]: T(4)
Out[35]: 15000

In [36]: people=100000

In [37]: n=1

In [38]: while people>0:
   ....:     people -= T(n)
   ....:     n += 1
   ....:     

In [39]: n
Out[39]: 7

In [40]: 100000/7000
Out[40]: 14