%I A131097
%S A131097 1,2,1,2,2,4,1,2,4,2,4,1,4,2,4,2,4,4,1,4,2,6,4,2,4,4,1,4,4,2,6,4,2,8,4,
%T A131097 4,1,4,4,2,8,6,4,2,8,4,4,10,1,4,4,2,8,6,4,10,2,8,4,4,10,1,4,4,8,2,8,6,
               4,
%U A131097 10,2,8,4,10,4,10,1,4,4,8,2,8,6,16,4,10,2,8,4,10,4
%N A131097 Sum of digits of 3-smooth numbers in ternary representeation.
%C A131097 a(n) = A053735(A003586(n)); values are even iff greater than 1.
%H A131097 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               DigitSum.html">Digit Sum</a>
%H A131097 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Ternary.html">Ternary</a>
%Y A131097 Sequence in context: A130831 A151678 A151681 this_sequence A062790 A046640 
               A049823
%Y A131097 Adjacent sequences: A131094 A131095 A131096 this_sequence A131098 A131099 
               A131100
%K A131097 nonn
%O A131097 0,2
%A A131097 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 14 2007