%I A153384
%S A153384 1,2,5,6,7,9,11,12,15,16,20,21,22,23,26,27,29,30,31,33,34,35,36,37,38,
%T A153384 40,41,44,45,46,49,51,53,56,57,58,59,60,61,63,64,65,66,68,70,71,72,76,
%U A153384 77,79,80,81,82,85,86,91,92,93,94,96,97,98,100,101,102
%N A153384 Numbers n such that 24n+1 is not prime
%F A153384 Let p = prime number, n=(p^2-1)/24 mod (p)
%Y A153384 A111174
%Y A153384 Sequence in context: A050103 A161539 A047580 this_sequence A102657 A047324 
               A057894
%Y A153384 Adjacent sequences: A153381 A153382 A153383 this_sequence A153385 A153386 
               A153387
%K A153384 nonn
%O A153384 1,2
%A A153384 Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 25 2008