Search: id:A064353
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%I A064353
%S A064353 1,3,3,3,1,1,1,3,3,3,1,3,1,3,3,3,1,1,1,3,3,3,1,3,3,3,1,3,3,3,1,1,1,3,3,
%T A064353 3,1,3,1,3,3,3,1,1,1,3,3,3,1,3,3,3,1,1,1,3,3,3,1,3,3,3,1,1,1,3,3,3,1,3,
%U A064353 1,3,3,3,1,1,1,3,3,3,1,3,3,3,1,3,3,3,1,1,1,3,3,3,1,3,1,3,3,3,1,1,1,3,3
%N A064353 Kolakoski-(1,3) sequence: a(n) is length of n-th run.
%C A064353 The frequency of the number '3' is 0.6027847... See problem A in http:/
               /www.math.leidenuniv.nl/%7Enaw/serie5/deel05/jun2004/pdf/uwc.pdf 
               Solution: http://www.jaapspies.nl/mathfiles/opgave2004-2A.pdf - Jaap 
               Spies (j.spies(AT)hccnet.nl), Dec 12 2004
%D A064353 E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, 
               Volume 59 (Jeux math'), April/June 2008, Paris.
%H A064353 Michael Baake and Bernd Sing, <a href="http://arXiv.org/abs/math.MG/0206098">
               Kolakoski-(3,1) is a (deformed) model set</a>
%o A064353 (Matlab) A = [1 3 3 3]; i = 3; next = 1; while length(A) < 140 A = [A 
               next*ones(1, A(i))]; i = i + 1; next = 4 - next; end
%Y A064353 Cf. A000002, A071820, A071907, A071928, A071942.
%Y A064353 Sequence in context: A126066 A130974 A131289 this_sequence A080311 A135368 
               A119560
%Y A064353 Adjacent sequences: A064350 A064351 A064352 this_sequence A064354 A064355 
               A064356
%K A064353 nonn,easy,nice
%O A064353 1,2
%A A064353 N. J. A. Sloane (njas(AT)research.att.com).
%E A064353 More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jul 16 
               2002

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