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 A116262 #2 Mar 30 2012 17:40:40 %S A116262 42,53,38160,61835,83615,346977,653018,950048,8647552,9534262, %T A116262 8167822280,9007920989,9209900789,9950000498,4737445289218, %U A116262 4990568257184,5009431742811,5262554710777,8373808925582 %N A116262 n times n+6 gives the concatenation of two numbers m and m-4. %Y A116262 Cf. A116131, A116256, A116261, A116263, A116282. %K A116262 nonn,base %O A116262 1,1 %A A116262 _Giovanni Resta_, Feb 06 2006