%I A037034
%S A037034 1,1,1,2,1,1,3,1,2,2,1,1,2,3,1,2,1,1,2,1,1,3,4,2,2,1,1,2,3,2,5,1,1,2,1,
%T A037034 3,3,1,2,3,1,1,5,7,1,2,3,1,3,1,5,5,1,2,2,1,1,2,13,1,2,3,1,5,4,1,6,1,3,
%U A037034 3,1,3,5,3,2,2,1,1,2,4,2,3,1,7,3,3,1,5,4,1,2,1,2,2,1,1,3,4,3,5,6,3,2,4
%N A037034 Least k such that 4*n*k-1 is a prime.
%e A037034 a(5)=1 because 4*5*1-1=19 is a prime
%Y A037034 Cf. A016014.
%Y A037034 Sequence in context: A128221 A115758 A124734 this_sequence A139462 A131376 
               A025840
%Y A037034 Adjacent sequences: A037031 A037032 A037033 this_sequence A037035 A037036 
               A037037
%K A037034 nonn
%O A037034 1,4
%A A037034 Felice Russo (felice.russo(AT)katamail.com)
%E A037034 More terms from Erich Friedman (erich.friedman(AT)stetson.edu)