%I A113213
%S A113213 0,1,3,3,9,3,21,15,9,15,21,3,45,135,75,15,99,93,99,315,105,105,15,75,
%T A113213 339,117,261,183,351,453,1281,267,675,867,819,117,69,2343,1995,1005,
%U A113213 2949,165,741,603,315,1287,1629,243,519,765,165,1233,741,1797,339,177
%N A113213 Smallest number m such that 2^n +/- m are primes.
%C A113213 At n>=3 all terms are multiples of 3.
%e A113213 a(1)=0 because 2^1 +/- 0 are primes; a(2)=1 because 2^2 -/+ 1 are primes;
%e A113213 a(33)=675 because 2^33 +/- 675 are closest (to each other) primes.
%Y A113213 Sequence in context: A166466 A068219 A157031 this_sequence A088032 A066572 
               A104195
%Y A113213 Adjacent sequences: A113210 A113211 A113212 this_sequence A113214 A113215 
               A113216
%K A113213 nonn
%O A113213 1,3
%A A113213 Zak Seidov (zakseidov(AT)yahoo.com), Jan 07 2006