15.py
305 Bytes
#!/usr/bin/python
import sys;
def factorial(num):
result = 1;
for x in range (num,1,-1):
result *= x;
return result;
def binomial(m,n):
return factorial(m)/(factorial(n)*factorial(m-n));
dimension = int(sys.argv[1]);
print "Result is: " + str(binomial(dimension*2,dimension));