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 A116236 #2 Mar 30 2012 17:40:40 %S A116236 7282816,8171726,4550754022124826465,5449245977875173531, %T A116236 8176518705147900804,8951999555715882882349355522887, %U A116236 9861090464806791973258446431978 %N A116236 n times n+5 gives the concatenation of two numbers m and m-8. %e A116236 8171726 * 8171731 = 6677714//6677706, where // denotes %e A116236 concatenation. %Y A116236 Cf. A116105, A116228, A116235, A116237, A116249. %K A116236 nonn,base %O A116236 1,1 %A A116236 _Giovanni Resta_, Feb 06 2006