%I A044139
%S A044139 50,99,148,197,246,295,344,350,393,442,491,540,589,638,687,693,
%T A044139 736,785,834,883,932,981,1030,1036,1079,1128,1177,1226,1275,1324,
%U A044139 1373,1379,1422,1471,1520,1569,1618,1667,1716,1722,1765,1814
%N A044139 Numbers n such that string 0,1 occurs in the base 7 representation of 
               n but not of n-1.
%Y A044139 Sequence in context: A138381 A090997 A141757 this_sequence A044520 A158066 
               A043220
%Y A044139 Adjacent sequences: A044136 A044137 A044138 this_sequence A044140 A044141 
               A044142
%K A044139 nonn,base
%O A044139 1,1
%A A044139 Clark Kimberling (ck6(AT)evansville.edu)