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 A043079 #5 Jul 12 2012 00:39:47 %S A043079 1,9,73,74,75,76,77,78,79,80,81,649,659,669,679,689,699,709,719,729, %T A043079 5833,5842,5851,5860,5869,5878,5887,5896,5905,5915,5924,5933,5942, %U A043079 5951,5960,5969,5978,5987,5997,6006,6015,6024,6033,6042 %N A043079 (s(n)+1)/9, where s(n)=n-th base 9 palindrome that starts with 8. %K A043079 nonn,base %O A043079 1,2 %A A043079 _Clark Kimberling_