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 A054168 #4 Mar 30 2012 16:48:46 %S A054168 1,2,3,4,5,8,9,14,23,36,57,104,181,326,603,1110,2069,3884,7317,13836, %T A054168 26283,49998,95421,182476,349721,671274,1290895,2485862,4794089, %U A054168 9257034,17896833,34637944,67110991,130152658,252649005,490857396 %N A054168 Inverse Moebius transform of A000013 (starting at term 0). %K A054168 nonn %O A054168 0,2 %A A054168 _N. J. A. Sloane_, Apr 29 2000