%I A043226
%S A043226 13,31,113,130,213,231,310,331,413,431,513,531,613,631,713,731,
%T A043226 813,831,913,931,1013,1031,1113,1130,1213,1231,1300,1413,1431,
%U A043226 1513,1531,1613,1631,1713,1731,1813,1831,1913,1931,2013,2031
%N A043226 Numbers n such that 1 and 3 occur juxtaposed in the base 10 representation 
               of n but not of n-1.
%Y A043226 Sequence in context: A160772 A039403 A062339 this_sequence A044006 A007628 
               A141837
%Y A043226 Adjacent sequences: A043223 A043224 A043225 this_sequence A043227 A043228 
               A043229
%K A043226 nonn,base
%O A043226 1,1
%A A043226 Clark Kimberling (ck6(AT)evansville.edu)