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 A116354 #2 Mar 30 2012 17:40:41 %S A116354 365,628,771,859,9043,81820,366328,633665,7272729,35294109,64705884, %T A116354 336663328,340080963,377622379,400178770,454545456,477101847, %U A116354 522898146,545454537,599821223,622377614,659919030,663336665 %N A116354 n times n+8 gives the concatenation of two numbers m and m+9. %Y A116354 Cf. A116223, A116341, A116353, A116355. %K A116354 nonn,base %O A116354 1,1 %A A116354 _Giovanni Resta_, Feb 06 2006