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 A050481 #5 Oct 19 2017 03:13:50 %S A050481 1,2,4,6,7,8,9,11,13,14,15,18,19,20,21,23,24,25,26,28,30,31,32,35,36, %T A050481 37,38,39,41,42,43,45,47,49,50,51,52,53,55,56,59,60,61,62,65,66,69,70, %U A050481 71,72,74,75,78,79,80,83,84,85,88,89,90,91,93,95,98,99,100,101,102,104,105 %N A050481 The first, second, fourth, sixth, seventh, ... letters in this sentence are consonants (ignoring spaces and commas). %C A050481 The first, second, fourth, sixth, seventh, eighth, ninth, eleventh, thirteenth, fourteenth, fifteenth, eighteenth, nineteenth, twentieth, twenty-first, ... letters in this sentence are consonants. - _Don Reble_, Apr 01 2003 %Y A050481 Cf. Aronson's sequence A005224, A080517-A080520. %K A050481 nonn,easy,word %O A050481 1,2 %A A050481 _N. J. A. Sloane_, based on a suggestion of Benoit Cloitre, Mar 31 2003 %E A050481 More terms from _Don Reble_, Apr 01 2003