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 A043685 #9 Apr 13 2021 23:08:04 %S A043685 341,597,661,677,681,682,683,685,693,725,853,1109,1173,1189,1193,1194, %T A043685 1195,1197,1205,1237,1301,1317,1321,1322,1323,1325,1333,1349,1353, %U A043685 1354,1355,1357,1361,1362,1363,1364,1366,1367,1369 %N A043685 a(n) = (1/2)*(n-th number whose base-2 representation has exactly 10 runs). %t A043685 Select[Range[2,3000,2],Length[Split[IntegerDigits[#,2]]]==10&]/2 (* _Harvey P. Dale_, Sep 17 2020 *) %K A043685 nonn,base %O A043685 1,1 %A A043685 _Clark Kimberling_