%I A133264
%S A133264 1,4,7,19,49,79,199,499,799,1999,4999,7999,19999,49999,79999,199999,
%T A133264 499999,799999,1999999,4999999,7999999,19999999,49999999,79999999,
%U A133264 199999999,499999999,799999999,1999999999,4999999999,7999999999
%N A133264 Smallest number whose sum of digits is 3n+1.
%Y A133264 Sequence in context: A062306 A140167 A006130 this_sequence A127415 A045548 
               A090879
%Y A133264 Adjacent sequences: A133261 A133262 A133263 this_sequence A133265 A133266 
               A133267
%K A133264 nonn,base
%O A133264 0,2
%A A133264 Paul Curtz (bpcrtz(AT)free.fr), Oct 16 2007