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 A080518 #4 Oct 19 2017 03:14:11 %S A080518 3,6,10,15,20,23,24,30,33,34,39,42,45,50,53,55,56,62,65,66,71,74,77, %T A080518 82,85,87,88,94,97,99,104,107,109,111,115,118,120,125,128,129,133,136, %U A080518 139,143,146,148,153,156,158,163,166,168,170,174,177,179,184,187,189,194 %N A080518 The third, sixth, tenth, fifteenth, ... letters in this sentence are vowels (ignoring spaces and commas). %C A080518 The third, sixth, tenth, fifteenth, twentieth, twenty-third, twenty-fourth, thirtieth, thirty-third, thirty-fourth, thirty-ninth, forty-second, forty-fifth, fiftieth, fifty-third, fifty-fifth, fifty-sixth, sixty-second, sixty-fifth, sixty-sixth, seventy-first, seventy-fourth, ... letters in this sentence are vowels. - _Don Reble_, Apr 01 2003 %Y A080518 Cf. Aronson's sequence A005224, A080517-A080520, A050481. %K A080518 nonn,easy,word %O A080518 1,1 %A A080518 _N. J. A. Sloane_, based on a suggestion of Benoit Cloitre, Mar 31 2003 %E A080518 More terms from _Don Reble_, Apr 01 2003