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 A025515 #5 Mar 30 2012 18:35:25 %S A025515 6077,6110,6131,6386,6413,7160,7361,8436,8975,9008,9071,11626,11653, %T A025515 11822,11849,11876,12545,12714,12741,12768,13019,13118,13145,13172, %U A025515 13277,13358,16661,26214,26241,26268,26475,51382,51639,51786,52173,52466,52753 %N A025515 Least k such that first k terms of A022300 contain n more 2's than 1's. %K A025515 nonn %O A025515 1,1 %A A025515 _David W. Wilson_