%I #9 Aug 23 2021 01:06:49
%S 21,42,85,106,149,168,213,234,277,298,336,362,405,426,469,490,533,554,
%T 597,618,661,680,725,746,789,810,848,874,917,938,981,1002,1045,1066,
%U 1109,1130,1173,1192,1237,1258,1301,1322,1344
%N Numbers k such that 2 and 5 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_
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