This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A043373 #10 Apr 24 2021 02:05:02 %S A043373 1,6,8,9,10,11,13,19,25,31,36,38,39,40,41,48,50,51,52,53,54,56,57,58, %T A043373 59,60,62,63,64,65,66,68,69,70,71,73,78,80,81,82,83,85,91,97,103,109, %U A043373 114,116,117,118,119,121,127,133,139,145,150,152 %N A043373 Numbers having one 1 in base 6. %Y A043373 Cf. A007092. %K A043373 nonn,base %O A043373 1,2 %A A043373 _Clark Kimberling_