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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}. 1
163, 409333, 376040154163, 1822896797857, 9871431850597, 13491637509487, 19802478368863 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

Subsequence of A247273.

LINKS

Table of n, a(n) for n=1..7.

PROG

(PARI)

forprime(p=1, 10^12, c=0; for(i=1, 12, if(ispseudoprime(p+(2*i)^2), c++)); if(c==12, print1(p, ", "))) \\ Derek Orr, Sep 11 2014

CROSSREFS

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

Sequence in context: A247269 A145741 A247273 * A247276 A127882 A240255

Adjacent sequences:  A247272 A247273 A247274 * A247276 A247277 A247278

KEYWORD

nonn

AUTHOR

Zak Seidov, Sep 11 2014

STATUS

approved

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Last modified May 26 01:01 EDT 2020. Contains 334613 sequences. (Running on oeis4.)