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 A026279 #4 Mar 30 2012 18:56:05 %S A026279 5,8,12,23,37,54,65,87,101,128,145,177,212,234,274,317,344,392,443, %T A026279 475,531,566,627,691,731,800,843,917,994,1042,1124,1175,1262,1352, %U A026279 1408,1503,1601,1662,1765,1829,1937,2048,2117,2233,2352 %N A026279 a(n) = sum of the numbers between the two n's in A026276. %K A026279 nonn %O A026279 1,1 %A A026279 _Clark Kimberling_