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 A139282 #8 Mar 31 2017 20:46:25 %S A139282 0,2,3,5,7,9,11,14,18,22,24,27,30,31,34,37,40,41,44,47,50,51,54,57,60, %T A139282 61,64,67,70,72,75,79,83,87,91,95,99,103,110,116,124,132,139,147,155, %U A139282 163,171,180,187,196,204,210,215,222,228,235,242,248,255,262,268,275 %N A139282 Form a sequence of words as follows: look to the left, towards the beginning of the sequence and write down the number of vowels you see; repeat; then replace the words with the corresponding numbers. %C A139282 The sequence of words is: zero, two, three, five, seven, nine, eleven, fourteen, ... %C A139282 Hyphens and spaces are not counted. %D A139282 E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris. %e A139282 The second word is "two" (and so a(2)=2), because at the end of the first word we can see two vowels (the vowels in "zero") to the left. %Y A139282 For a French version see A139212. %K A139282 nonn,word,easy %O A139282 0,2 %A A139282 _N. J. A. Sloane_, Jun 08 2008 %E A139282 Cross reference corrected by _Sean A. Irvine_, Mar 15 2010 %E A139282 More terms from _Sean A. Irvine_, Mar 15 2010