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Numbers k such that 1 and 6 occur juxtaposed in the base-9 representation of k but not of k+1.
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%I #9 Aug 26 2021 09:39:20

%S 15,55,96,143,177,217,258,298,339,379,420,460,503,541,582,622,663,703,

%T 744,784,825,872,906,946,987,1027,1068,1108,1149,1189,1295,1311,1351,

%U 1392,1432,1473,1513,1554,1601,1635,1675,1716

%N Numbers k such that 1 and 6 occur juxtaposed in the base-9 representation of k but not of k+1.

%Y Cf. A007095.

%K nonn,base

%O 1,1

%A _Clark Kimberling_