Calculate #pi with #python for #piday
#!/usr/bin/python3
from decimal import *
import sys
getcontext().prec = 40
c = 0
s = Decimal(1);
pi = Decimal(3);
n = int(sys.argv[1])
for i in range(2, n * 2, 2):
pi = pi + s * (Decimal(4) / (Decimal(i) * (Decimal(i) + Decimal(1)) * (Decimal(i) + Decimal(2))))
s = -1 * s
c = c + 1
print (c, (pi))
