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 A116303 #2 Mar 30 2012 17:40:40 %S A116303 3,84,76981,714688,952312,90438189,96320542,32980078899027, %T A116303 34346653774236,42816188292271,42881990066486,57118009933510, %U A116303 57183811707725,65653346225760,67019921100969,81321742742208 %N A116303 n times n+5 gives the concatenation of two numbers m and m+2. %e A116303 96320542 * 96320547 = 92776472//92776474, where // denotes %e A116303 concatenation. %Y A116303 Cf. A116172, A116289, A116302, A116304, A116310. %K A116303 nonn,base %O A116303 1,1 %A A116303 _Giovanni Resta_, Feb 06 2006