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 A050742 #9 Oct 16 2019 01:31:51 %S A050742 0,1,2,3,4,5,6,7,8,9,12,13,16,17,18,19,21,22,23,24,25,26,27,28,29,31, %T A050742 32,33,34,35,37,38,39,41,43,44,47,51,52,54,56,57,59,62,65,66,69,72,73, %U A050742 75,76,79,83,84,85,86,87,88,89,91,93,94,95,97,101,102,103,108,109,111 %N A050742 Numbers k such that the decimal expansion of k^3 contains no pair of consecutive equal digits. %Y A050742 Cf. A050750. %K A050742 nonn,base %O A050742 1,3 %A A050742 _Patrick De Geest_, Sep 15 1999