login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A164490 Number of binary strings of length n with no substrings equal to 0010 0011 or 0110 1

%I

%S 13,21,32,50,76,117,177,270,408,620,937,1421,2148,3254,4920,7449,

%T 11265,17050,25788,39024,59029,89317,135112,204426,309252,467885,

%U 707825,1070886,1620080,2451028,3708049,5609885,8486988,12839854,19425008

%N Number of binary strings of length n with no substrings equal to 0010 0011 or 0110

%H R. H. Hardin, <a href="/A164490/b164490.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 (2,0,-2,2,-1)

%F G.f. -x^4*(-13+5*x+10*x^2-12*x^3+8*x^4) / ( (x-1)*(x^4-x^3+x^2+x-1) ). - R. J. Mathar, Jan 19 2011

%K nonn

%O 4,1

%A _R. H. Hardin_ Aug 14 2009

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 15 18:26 EDT 2021. Contains 343920 sequences. (Running on oeis4.)