%I A115527
%S A115527 3,8163265306122448979592,18367346938775510204082,
%T A115527 32653061224489795918368,
%U A115527 504986744097967428355005681100871102133568993813912384800
%N A115527 Numbers n such that the concatenation of n with 2*n gives a square.
%e A115527 3_6 = 6^2.
%Y A115527 Cf. A102567, A106497, A115528 - A115556.
%Y A115527 Sequence in context: A058471 A068740 A058473 this_sequence A050920 A001231 
               A141150
%Y A115527 Adjacent sequences: A115524 A115525 A115526 this_sequence A115528 A115529 
               A115530
%K A115527 nonn,base
%O A115527 1,1
%A A115527 Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 25 2006