%I #9 Aug 26 2021 03:10:08
%S 47,61,111,125,175,189,239,253,303,317,367,383,431,445,495,509,559,
%T 573,623,637,687,701,751,765,815,829,879,895,943,957,1007,1021,1071,
%U 1085,1135,1149,1199,1213,1263,1277,1327,1341,1391
%N Numbers k such that 5 and 7 occur juxtaposed in the base-8 representation of k but not of k+1.
%Y Cf. A007094.
%K nonn,base
%O 1,1
%A _Clark Kimberling_