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 A232360 #4 Nov 25 2013 12:11:30 %S A232360 0,1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2,1,0,1,1,1,2,1,2,3,2,1,2,3,4,3,2,1, %T A232360 2,3,4,5,4,3,2,1,2,3,4,5,6,5,4,3,2,1,2,3,4,5,6,7,6,5,4,3,2,1,2,3,4,5, %U A232360 6,7,8,7,6,5,4,3,2,1,2,3,4,5,6,7,8,9,8 %N A232360 A walk based on the digits of Champernowne constant C (A033307). %C A232360 C = 0,12345678910111213141516171819202122... %C A232360 Between 0 and 1 we place nothing. %C A232360 Between 1 and 2 we place nothing. %C A232360 Between 2 and 3 we place nothing. %C A232360 Between 3 and 4 we place nothing. %C A232360 Between 4 and 5 we place nothing. %C A232360 Between 5 and 6 we place nothing. %C A232360 Between 6 and 7 we place nothing. %C A232360 Between 7 and 8 we place nothing. %C A232360 Between 8 and 9 we place nothing. %C A232360 Between 9 and 1 we place 8, 7, 6, 5, 4, 3 and 2. %C A232360 .... %C A232360 Between 1 and 3 we place 2. %C A232360 Between 3 and 1 we place 2, and so on. %C A232360 This gives: %C A232360 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, ... %C A232360 This could be called a walk (or promenade) on the digits of C. %Y A232360 Cf. A007376, A033307 %K A232360 nonn,easy,base %O A232360 1,3 %A A232360 _Philippe Deléham_, Nov 23 2013