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 A030375 #4 Mar 30 2012 18:56:18 %S A030375 1,4,6,7,8,10,15,23,28,31,33,34,37,40,41,43,44,45,46,47,49,50,52,55, %T A030375 57,58,61,64,67,69,70,73,81,89,92,93,95,98,105,117,129,137,140,141, %U A030375 143,146,153,165,172,176,179,180,184,188,190,192 %N A030375 Position of n-th 1 in A030373. %K A030375 nonn %O A030375 1,2 %A A030375 _Clark Kimberling_