%I A077459
%S A077459 0,3,6,7,12,14,15,24,28,30,31,45,48,51,56,60,62,63,75,89,90,93,96,99,
%T A077459 102,103,109,112,115,120,124,126,127,139,150,151,155,177,178,180,185,
%U A077459 186,189,192,195,198,199,204,206,207,217,218,221,224,227,230,231,237
%N A077459 Numbers n such that n and 3n have the same digital binary sum.
%C A077459 n such that valuation(C(3n,n),2)= valuation(C(2n,n),2) - Benoit Cloitre 
               (benoit7848c(AT)orange.fr), Mar 20 2004
%e A077459 51 binary representation is [1, 1, 0, 0, 1, 1] and 3*51=153 binary representation 
               is [1, 0, 0, 1, 1, 0, 0, 1], both binary sum = 4, hence 51 is in 
               the sequence.
%Y A077459 Sequence in context: A095029 A028792 A144795 this_sequence A048717 A022434 
               A163617
%Y A077459 Adjacent sequences: A077456 A077457 A077458 this_sequence A077460 A077461 
               A077462
%K A077459 base,nonn
%O A077459 1,2
%A A077459 Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 01 2002