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A164423 Number of binary strings of length n with no substrings equal to 0000 0010 or 1100 1

%I

%S 13,21,35,59,100,171,292,497,845,1436,2440,4147,7050,11986,20378,

%T 34645,58899,100131,170227,289394,491985,836402,1421931,2417363,

%U 4109652,6986636,11877667,20192690,34328690,58360674,99216379,168673341

%N Number of binary strings of length n with no substrings equal to 0000 0010 or 1100

%H R. H. Hardin, <a href="/A164423/b164423.txt">Table of n, a(n) for n=4..500</a>

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,0,0,0,1,1).

%F G.f. -x^4*(13+8*x+x^2+3*x^3+6*x^4+12*x^5+8*x^6) / ( -1+x+x^2+x^6+x^7 ). - R. J. Mathar, Dec 01 2011

%K nonn

%O 4,1

%A _R. H. Hardin_ Aug 14 2009

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Last modified January 30 08:48 EST 2023. Contains 359942 sequences. (Running on oeis4.)