login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A164395 Number of binary strings of length n with no substrings equal to 0001 or 0101 1
14, 24, 42, 72, 122, 208, 354, 600, 1018, 1728, 2930, 4968, 8426, 14288, 24226, 41080, 69658, 118112, 200274, 339592, 575818, 976368, 1655554, 2807192, 4759930, 8071040, 13685426, 23205288, 39347370, 66718224, 113128802, 191823544 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

R. H. Hardin, Table of n, a(n) for n=4..500

Index entries for linear recurrences with constant coefficients, signature (2,-1,2,-2).

FORMULA

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

CROSSREFS

Sequence in context: A164404 A164400 A164405 * A164394 A211323 A141838

Adjacent sequences:  A164392 A164393 A164394 * A164396 A164397 A164398

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 14 2009

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified March 26 18:46 EDT 2017. Contains 284137 sequences.