OFFSET
1,1
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..6658
PROG
(Python)
from itertools import product
from gmpy2 import is_prime
A156200_list = [int(''.join(d)) for l in range(4, 10) for d in product('0689', repeat=l) if d[0] != '0' and len(set(d)) == 4 and is_prime(int(''.join(d)))] # Chai Wah Wu, Aug 13 2015
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Ki Punches, Feb 05 2009
EXTENSIONS
Edited and corrected by Ray Chandler, Feb 08 2009
STATUS
approved