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%I #2 Mar 30 2012 18:40:03
%S 2,2,0,2,0,2,0,1,0,2,0,1,0,2,0,1,0,1,0,2,0,1,0,2,0,1,0,1,0,1,0,1,0,2,
%T 0,1,0,1,0,0,0,1,0,1,0,2,0,0,0,2,0,1,0,1,0,1,0,1,0,2,0,0,0,2,0,2,0,0,
%U 0,1,0,0,0,1,0,1,0,1,0,2,0,2,0,0,1,0,1
%N Number of primes between two successive numbers congruent to {2, 4} mod 6.
%C Except for twin primes, there are 2n numbers congruent to {2, 4} mod 6 between two consecutive primes
%C a(n) = 2 iff there are twin primes between two numbers congruent to {2, 4} mod 6.
%K easy,nonn
%O 1,1
%A _Giovanni Teofilatto_, Oct 29 2006, corrected Nov 01 2006
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