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 A116328 #2 Mar 30 2012 17:40:40 %S A116328 46,4947936213,5052063779,9742829100,32730757363062987012674789, %T A116328 67269242636937012987325203,99706862598549297056423092, %U A116328 3163201195414530993427385140698350 %N A116328 n times n+9 gives the concatenation of two numbers m and m+5. %Y A116328 Cf. A116197, A116321, A116327, A116334. %K A116328 nonn,base %O A116328 1,1 %A A116328 _Giovanni Resta_, Feb 06 2006