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 A116331 #2 Mar 30 2012 17:40:40 %S A116331 456,540,7666,72722,356430,643566,9090911,35294119,64705877,335664330, %T A116331 664335666,684210521,818181820,838056675,846153848,866028703, %U A116331 980125140,3861386140,6138613856,6916125390,9222488468,41358246491 %N A116331 n times n+5 gives the concatenation of two numbers m and m+6. %Y A116331 Cf. A116200, A116324, A116330, A116332, A116338. %K A116331 nonn,base %O A116331 1,1 %A A116331 _Giovanni Resta_, Feb 06 2006