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%I #5 Mar 30 2012 18:56:46
%S 70,151,232,313,394,475,556,638,718,799,880,961,1042,1123,1204,1285,
%T 1367,1447,1528,1609,1690,1771,1852,1933,2014,2096,2176,2257,2338,
%U 2419,2500,2581,2662,2743,2825,2905,2986,3067,3148
%N Numbers n such that string 7,7 occurs in the base 9 representation of n but not of n+1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_