%I #12 Jul 04 2018 01:57:12
%S 1,5,7,15,21,23,27,49,63,65,83,89,103,107,131,135,149,159,161,181,187,
%T 197,203,209,223,231,237,245,253,257,261,279,281,301,307,313,327,331,
%U 335,337,369,371,377,385,397
%N Numbers n such that 23*n^2  4 is prime.
%H Robert Israel, <a href="/A110994/b110994.txt">Table of n, a(n) for n = 1..10000</a>
%e If n=89 then 23*n^2  4 = 182179 (prime).
%p select(n > isprime(23*n^24), [seq(i,i=1..1000,2)]); # _Robert Israel_, Jul 04 2018
%t Select[Range[400], PrimeQ[(23#^2  4)] &] (* _Stefan Steinerberger_, Feb 28 2006 *)
%o (PARI) is(n)=isprime(23*n^24) \\ _Charles R Greathouse IV_, Jun 13 2017
%K nonn,easy
%O 1,2
%A _Parthasarathy Nambi_, Sep 30 2005
%E More terms from _Stefan Steinerberger_, Feb 28 2006
