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%I #3 Oct 02 2013 15:47:28
%S 0,2,1,2,2,3,1,2,1,2,1,2,3,2,3,2,1,3,3,1,2,2,1,1,2,1,2,1,2,3,3,1,2,3,
%T 2,3,3,2,3,1,2,3,1,1,2,1,2,3,1,2,3,2,3,1,2,1,1,2,3,1,3,2,1,2,3,1,2,1,
%U 1,2,3,1,2,3,1,2,3,1,3,1,1,2,3,2,1,3,2,2,3,1,3,3,2,3,1,2,3,1,1,2,3,1,3,2,3
%N Semiprimes (mod 4).
%Y Cf. A001358.
%K nonn
%O 1,2
%A _Shyam Sunder Gupta_, May 07 2005