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 A116255 #2 Mar 30 2012 17:40:40 %S A116255 76,80917,91807,326508,475023,524973,673488,4323775,4767130,5232866, %T A116255 5676221,4083911139,4975000248,5024999748,5916088857,9503960494, %U A116255 9604950394,4186904462790,4313465946773,5686534053223,5813095537206 %N A116255 n times n+5 gives the concatenation of two numbers m and m-5. %Y A116255 Cf. A116124, A116249, A116254, A116256, A116261. %K A116255 nonn,base %O A116255 1,1 %A A116255 _Giovanni Resta_, Feb 06 2006