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 A116228 #2 Mar 30 2012 17:40:40 %S A116228 96011,3812029082958589067221817215312, %T A116228 6187970917041410932778182784684,3189731673290266386838927279556315880 %N A116228 n times n+5 gives the concatenation of two numbers m and m-9. %e A116228 96011 * 96016 = 92185//92176, where // denotes concatenation. %Y A116228 Cf. A116097, A116227, A116229, A116236. %K A116228 nonn,base %O A116228 1,1 %A A116228 _Giovanni Resta_, Feb 06 2006