Search: id:A145843
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%I A145843
%S A145843 2,3,5,7,383,647,769,863,971,1151,1153,1297,1459,1801,2161,2251,2399,
%T A145843 2591,2593,2699,2879,2917,2999,3001,3457,3527,3529,3779,3889,4049,4051,
%U A145843 4201,4373,4409,4703,4799,4801,4861,5039,5399,5669,5879,5881,6047,6143
%N A145843 Primes q which are not of the form 6*p*(6*p+x)-1 or 6*p*(6*p+x)+1 with 
               p = prime and -6*p < x < 6*p
%C A145843 for n < 100000 more than 90% of the primes are of the form 6*p*(6*p+x) 
               +1 or -1 with -6*p < x < 6*p, what for n > 100000 ?
%H A145843 Pierre CAMI, <a href="b145843.txt">Table of n, a(n) for n = 1..862</a>
%e A145843 2,3,5,7 are < 6*2, so the sequence starts 2,3,5,7 6*2*(6*2-11)-1=11 prime 
               so 11 not in the sequence 6*2*(6*2-11)+1=13 prime so 13 not in the 
               sequence ................ 383+1=384, 384/12 = 32, 383=6*2(6*2+20)-1, 
               20 > 6*2 so 383 = q(5)
%Y A145843 Sequence in context: A045336 A083183 A046477 this_sequence A090720 A114780 
               A134811
%Y A145843 Adjacent sequences: A145840 A145841 A145842 this_sequence A145844 A145845 
               A145846
%K A145843 nonn
%O A145843 1,1
%A A145843 Pierre CAMI (pierrecami(AT)tele2.fr), Oct 21 2008

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