Search: id:A153170
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%I A153170
%S A153170 2,4,6,8,10,11,12,14,16,18,20,21,22,24,25,26,28,30,31,32,34,36,38,39,30,
%T A153170 41,42,44,46,47,48,50,51,52,53,54,56,58,60,61,62,64,66,67,68,69,70,71,
%U A153170 72,73,74,76,78,80,81,82,84,86,88,90,91,92,94,95,96,98,99,100,101,102
%N A153170 Numbers n such that 3n+2 is not prime
%C A153170 Of course n is even
%F A153170 Let p prime number n=[(p^2+2p-2)/3] mod (2p); (For columns of sound odd 
               place) n=[(p^2+4p-2)/3] mod (2p); (For columns of sound even place)
%e A153170 *; *, *; *, 11, *; *, *, *, *; *, *, 25, *, *; *, 21, *, *, 47, *; *, 
               *, *, *, *, *, *; *, *, 39, *, *, 73, *, *; *. 31, *, *, 69, *, *, 
               107, *;
%Y A153170 Cf. A024893
%Y A153170 Sequence in context: A081472 A097660 A154809 this_sequence A067030 A072427 
               A050420
%Y A153170 Adjacent sequences: A153167 A153168 A153169 this_sequence A153171 A153172 
               A153173
%K A153170 nonn
%O A153170 1,1
%A A153170 Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 20 2008

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