A104110 Nonnegative numbers k such that k^2 + 42 is prime.

1, 5, 11, 13, 17, 23, 29, 41, 47, 53, 55, 89, 95, 101, 103, 107, 109, 115, 121, 125, 131, 145, 157, 169, 179, 181, 185, 191, 197, 211, 221, 233, 239, 247, 271, 277, 289, 299, 307, 311, 313, 325, 349, 355, 359, 361, 367, 403, 421, 425, 433, 443, 457, 467, 493

Offset

1,2

Links

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

Mathematica

Select[Range[1, 500, 2], PrimeQ[#^2+42]&] (* Harvey P. Dale, May 25 2017 *)

Prog

(PARI) for(i=0, 422, if(isprime(i^2+42), print1(i ", ")))
(Magma) [ n: n in [0..500] | IsPrime(n^2 + 42) ] // Vincenzo Librandi, Nov 13 2010

Crossrefs

Sequence in context: A371449 A272446 A307390 * A038936 A106091 A246374

Adjacent sequences: A104107 A104108 A104109 * A104111 A104112 A104113

Keyword

nonn

Author

Gerald McGarvey, Mar 04 2005

Status

approved