A043115 - OEIS

%I #8 Aug 22 2021 22:35:47

%S 19,23,44,48,69,73,94,115,123,144,148,169,173,194,198,219,240,248,269,

%T 273,294,298,319,323,344,365,373,394,398,419,423,444,448,469,519,523,

%U 544,548,569,573,575,615,623,644,648,669,673

%N Numbers k such that 3 and 4 occur juxtaposed in the base-5 representation of k but not of k-1.

%Y Cf. A007091.

%K nonn,base

%O 1,1

%A _Clark Kimberling_