A114275 Numbers k such that k^2 + 12 is prime.

1, 5, 7, 13, 19, 23, 29, 35, 37, 41, 43, 47, 55, 61, 85, 89, 91, 97, 113, 119, 121, 127, 139, 161, 167, 169, 175, 187, 191, 197, 203, 211, 215, 223, 229, 245, 265, 271, 295, 299, 307, 317, 335, 341, 355, 371, 379, 383, 401, 419, 427, 455, 463, 475, 491, 517, 527

Offset: 1

Author

Zak Seidov, Nov 19 2005

Keywords

• nonn

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Other sequences of the type "Numbers k such that k^2 + i is prime": A005574 (i=1), A067201 (i=2), A049422 (i=3), A007591 (i=4), A078402 (i=5), A114269 (i=6), A114270 (i=7), A114271 (i=8), A114272 (i=9), A114273 (i=10), A114274 (i=11), this sequence (i=12).

Programs

Mathematica

Select[Range[1,611,2],PrimeQ[#^2+12]&] (* Harvey P. Dale, Mar 30 2015 *)

PARI

is(n)=isprime(n^2+12) \\ Charles R Greathouse IV, Jan 21 2015