A247275 Primes p such that p + m^2 is prime for all m in {2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24}.

163, 409333, 376040154163, 1822896797857, 9871431850597, 13491637509487, 19802478368863

Offset: 1

Author

Zak Seidov, Sep 11 2014

Keywords

• nonn
• more
• changed

Comments

All terms are == {7, 13} mod 30.

Subsequence of A247273.

Crossrefs

Cf. A049492, A092120, A246842, A247269, A247273, A145741.

Programs

PARI

forprime(p=1, oo, c=0; for(i=1, 12, if(ispseudoprime(p+(2*i)^2), c++)); if(c==12, print1(p, ", "))) \\ Derek Orr, Sep 11 2014