# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a111082 Showing 1-1 of 1 %I A111082 #17 Sep 08 2022 08:45:20 %S A111082 2,4,6,8,10,18,20,24,30,32,34,44,46,48,50,52,58,68,72,74,76,78,80,94, %T A111082 96,104,106,122,128,132,134,146,148,158,162,164,172,178,186,192,200, %U A111082 204,208,214,226,230,232,240,254,256,258,262,268,270,276,278,286,292,296 %N A111082 Numbers n such that 3*n^2 + 49 is prime. %H A111082 Harvey P. Dale, Table of n, a(n) for n = 1..1000 %e A111082 If n=96 then (3*n^2) + 49 = 27697 (prime). %t A111082 Select[Range[300],PrimeQ[3#^2+49]&] (* _Harvey P. Dale_, Sep 04 2019 *) %o A111082 (Magma) [n: n in [0..300] | IsPrime(3*n^2+49)]; - _Vincenzo Librandi_, Nov 13 2010 %o A111082 (PARI) is(n)=isprime(3*n^2+49) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A111082 Cf. A111068, A111069. %K A111082 nonn,easy %O A111082 1,1 %A A111082 _Parthasarathy Nambi_, Oct 11 2005 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE