%I A090405
%S A090405 2,1,1,1,1,1,0,0,1,1,1,1,0,0,1,1,1,1,0,0,1,1,0,0,0,0,1,1,1,1,0,0,0,0,1,
%T A090405 1,0,0,1,1,1,1,0,0,1,1,0,0,0,0,1,1,0,0,0,0,1,1,1,1,0,0,0,0,1,1,0,0,1,1,
%U A090405 1,1,0,0,0,0,1,1,0,0,1,1,0,0,0,0,1,1,0,0,0,0,0,0,1,1,0,0,1,1,1,1
%N A090405 PrimePi[n+2]-PrimePi[n].
%H A090405 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Hardy-LittlewoodConjectures.html">Hardy-Littlewood Conjectures</a>
%Y A090405 Cf. A080545, A090406.
%Y A090405 Sequence in context: A086075 A056978 A037819 this_sequence A079635 A037909 
               A000164
%Y A090405 Adjacent sequences: A090402 A090403 A090404 this_sequence A090406 A090407 
               A090408
%K A090405 nonn
%O A090405 1,1
%A A090405 Eric Weisstein (eric(AT)weisstein.com), Nov 29, 2003