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 A265567 #4 Dec 10 2015 10:52:30 %S A265567 0,1,2,3,4,5,11,11,22,22,22,22,22,22,22,33,33,33,33,33,33,33,44,44,44, %T A265567 44,44,44,44,55,55,55,55,55,55,55,101,101,111,111,111,111,111,111,121, %U A265567 121,121,121,121,121,131,131,131,131,131,131,141,141,141,141,141,141,151,151,151,151,151,151,202,202,202,202 %N A265567 Smallest base-6 palindrome m >= n, written in base 6. %Y A265567 Sequences related to palindromic floor and ceiling: A175298, A206913, A206914, A261423, A262038, and the large block of consecutive sequences beginning at A265509. %K A265567 nonn,base %O A265567 0,3 %A A265567 _N. J. A. Sloane_, Dec 10 2015