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A164443 Number of binary strings of length n with no substrings equal to 0000 0111 or 1110 1

%I

%S 13,22,37,64,110,190,329,570,988,1713,2971,5153,8938,15504,26894,

%T 46652,80926,140381,243517,422426,732778,1271143,2205040,3825063,

%U 6635303,11510202,19966647,34635969,60082715,104224965,180798144,313628975

%N Number of binary strings of length n with no substrings equal to 0000 0111 or 1110

%H R. H. Hardin, <a href="/A164443/b164443.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 (1,1,1,0,-1,-1).

%F G.f. -x^4*(-13-9*x-2*x^2+8*x^3+13*x^4+8*x^5) / ( (x-1)*(x^5+2*x^4+2*x^3+x^2-1) ). - R. J. Mathar, Jan 19 2011

%K nonn

%O 4,1

%A _R. H. Hardin_ Aug 14 2009

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Last modified June 23 12:08 EDT 2021. Contains 345401 sequences. (Running on oeis4.)