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 A043714 #10 Jun 18 2021 23:07:35 %S A043714 1,2,3,4,5,6,7,8,9,10,12,24,36,48,60,72,84,96,108,120,122,123,124,125, %T A043714 126,127,128,129,130,131,133,143,144,146,147,148,149,150,151,152,153, %U A043714 154,155,156,158,159,160,161,162,163,164,165 %N A043714 Numbers whose base-11 representation has an odd number of runs. %t A043714 Select[Range[200],OddQ[Length[Split[IntegerDigits[#,11]]]]&] (* _Harvey P. Dale_, Nov 17 2018 *) %K A043714 nonn,base %O A043714 1,2 %A A043714 _Clark Kimberling_