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 A116250 #2 Mar 30 2012 17:40:40 %S A116250 95,384,428,566,610,813,995,4520,5474,9995,90909,99995,316831,683163, %T A116250 999995,3636363,6363631,9999995,82352941,99999995,331668331,368421052, %U A116250 395604390,442767753,461538461,488721799,511278195,538461533 %N A116250 n times n+7 gives the concatenation of two numbers m and m-6. %Y A116250 Cf. A116119, A116243, A116249, A116263. %K A116250 nonn,base %O A116250 1,1 %A A116250 _Giovanni Resta_, Feb 06 2006