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 A265560 #4 Dec 10 2015 10:50:10 %S A265560 0,1,2,4,4,8,8,8,8,10,10,13,13,13,16,16,16,20,20,20,20,23,23,23,26,26, %T A265560 26,28,28,40,40,40,40,40,40,40,40,40,40,40,40,52,52,52,52,52,52,52,52, %U A265560 52,52,52,52,56,56,56,56,68,68,68,68,68,68,68,68,68,68,68,68,80,80,80,80,80,80,80,80,80,80,80,80,82 %N A265560 Smallest base-3 palindrome m >= n, written in base 10. %Y A265560 Sequences related to palindromic floor and ceiling: A175298, A206913, A206914, A261423, A262038, and the large block of consecutive sequences beginning at A265509. %K A265560 nonn,base %O A265560 0,3 %A A265560 _N. J. A. Sloane_, Dec 10 2015