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A247273 Primes p such that p + m^2 is prime for all m in {2,4,6,8,10,12,14,16,18,20,22}. 3
163, 409333, 9671300983, 186521536807, 376040154163, 459775038913, 485142116713, 773464440907, 916792710667, 982557050143, 1087801149583, 1213507492723, 1822896797857, 2131006835017, 3026318319523, 4617478214407, 5141744558017, 6552892412047, 6629618954863, 6787014897877, 7636453217677, 7788411508483, 8311114648153, 8547311473387, 8668135024957, 9206471763547 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

Subsequence of A145741.

LINKS

Zak Seidov, Table of n, a(n) for n = 1..41

PROG

(PARI)

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

CROSSREFS

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

Sequence in context: A306501 A247269 A145741 * A247275 A247276 A127882

Adjacent sequences:  A247270 A247271 A247272 * A247274 A247275 A247276

KEYWORD

nonn

AUTHOR

Zak Seidov, Sep 11 2014

STATUS

approved

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Last modified April 5 08:04 EDT 2020. Contains 333238 sequences. (Running on oeis4.)