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%I #9 Aug 23 2021 01:06:39
%S 23,58,87,122,151,184,215,250,279,314,343,378,407,442,464,506,535,570,
%T 599,634,663,696,727,762,791,826,855,890,919,954,976,1018,1047,1082,
%U 1111,1146,1175,1208,1239,1274,1303,1338,1367
%N Numbers k such that 2 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_