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A237191
Numbers n such that n+1, n+3, n^2+1, n^2+3, n^4+1, n^4+3 are six primes.
1
2, 520360, 14320216, 30527896, 119668186, 120506050, 131448430, 142493926, 211158676, 254574706, 276368680, 306216940, 315122416, 421132180, 472731400, 506213890, 540271396, 616078786, 629310346, 646308250, 741176296, 752897860, 800587480, 851425030, 897745996
OFFSET
1,1
COMMENTS
A subsequence of A067662, A070325, A070689, A080149.
LINKS
PROG
(Python)
import sympy
from sympy import isprime
for n in range(0, 1000000000, 2):
if isprime(n+1) and isprime(n*n+1) and isprime(n**4+1):
if isprime(n+3) and isprime(n*n+3) and isprime(n**4+3):
print str(n)+', ',
CROSSREFS
KEYWORD
nonn
AUTHOR
Alex Ratushnyak, Feb 04 2014
STATUS
approved