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

 

Logo

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A164390 Number of binary strings of length n with no substrings equal to 0000 or 0110 2
14, 25, 44, 79, 141, 253, 452, 809, 1446, 2587, 4626, 8275, 14799, 26470, 47341, 84673, 151439, 270857, 484436, 866436, 1549652, 2771618, 4957145, 8866056, 15857289, 28361399, 50725485, 90724558, 162264477, 290216490, 519063741, 928366188 (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 (1, 1, 0, 1, 0, 1).

FORMULA

Conjecture: G.f. -x^4*(14+11*x+5*x^2+10*x^3+4*x^4+8*x^5) / ( -1+x+x^2+x^4+x^6 ). - R. J. Mathar, Nov 28 2011

CROSSREFS

Sequence in context: A164393 A164391 A164392 * A164388 A164403 A164389

Adjacent sequences:  A164387 A164388 A164389 * A164391 A164392 A164393

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 August 17 01:56 EDT 2017. Contains 290631 sequences.