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 A265556 #4 Dec 10 2015 10:33:56 %S A265556 0,1,2,3,4,5,6,7,8,10,10,20,30,40,50,60,70,80,20,20,20,30,40,50,60,70, %T A265556 80,30,30,30,30,40,50,60,70,80,40,40,40,40,40,50,60,70,80,50,50,50,50, %U A265556 50,50,60,70,80,60,60,60,60,60,60,60,70,80,70,70,70,70,70,70,70,70,80,80,80,80,80,80,80,80,80,80,82 %N A265556 a(n) = smallest base-9 palindrome m >= n such that every base-9 digit of n is <= the corresponding digit of m; m is written in base 10. %Y A265556 Sequences related to palindromic floor and ceiling: A175298, A206913, A206914, A261423, A262038, and the large block of consecutive sequences beginning at A265509. %K A265556 nonn,base %O A265556 0,3 %A A265556 _N. J. A. Sloane_, Dec 10 2015