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 A116265 #2 Mar 30 2012 17:40:40 %S A116265 96013,3812029082958589067221817215314, %T A116265 6187970917041410932778182784686,3189731673290266386838927279556315882 %N A116265 n times n+1 gives the concatenation of two numbers m and m-3. %e A116265 96013 * 96014 = 92185//92182, where // denotes concatenation. %Y A116265 Cf. A116134, A116251, A116266, A116272. %K A116265 nonn,base %O A116265 1,1 %A A116265 _Giovanni Resta_, Feb 06 2006