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 A187199 #15 Nov 04 2024 12:51:03 %S A187199 1,1,2,2,3,4,3,5,2,3,3,4,6,3,6,4,2,5,4,6,4,3,5,7,4,5,7,5,4,6,6,5,5,6, %T A187199 6,4,8,5,5,9,10,7,9,8,7,5,8,11,5,6,6,7,8,7,6,6,7,7,7,9,4,4,8,8,10,5,7, %U A187199 8,7,9,8,12,6,10,6,8,6,10,7,9,9,8,7,8,7,9,8,7,8,8,9,9,10,8,10,9,8,11,5,6 %N A187199 Parse the Kolakoski sequence A000002 into distinct phrases 1, 2, 21, 12, 122, 1221, 121, 12212, 11, ...; a(n) = length of n-th phrase. %H A187199 Rémy Sigrist, <a href="/A187199/b187199.txt">Table of n, a(n) for n = 1..10000</a> %H A187199 Rémy Sigrist, <a href="/A187199/a187199.gp.txt">PARI program</a> %o A187199 (PARI) \\ See Links section. %Y A187199 Cf. A000002, A007782, A109337, A187180-A187188, A187200. %K A187199 nonn %O A187199 1,3 %A A187199 _N. J. A. Sloane_, Mar 06 2011