# Author: Manfred Scheucher # Date : 01.06.2015 from sys import argv mink = eval(argv[1]) maxk = eval(argv[2]) if len(argv)>2 else mink for k in [mink..maxk]: n = 6^k ct = 0 for p in primes(n): q = n-p if q < p: break if q.is_prime(): ct+=1 print k,ct