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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A164144 Number of binary strings of length n with equal numbers of 001 and 101 substrings 1
1, 2, 4, 6, 8, 11, 18, 36, 76, 153, 289, 525, 954, 1787, 3464, 6832, 13452, 26207, 50603, 97525, 188805, 367994, 720805, 1414179, 2772486, 5428759, 10626469, 20818945, 40850896, 80275617, 157897960, 310707852, 611510788, 1203795095, 2370700373 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Seems to obey an 8-term hypergeometric recurrence with cubic polynomial coefficients. - R. J. Mathar, Nov 28 2011

LINKS

R. H. Hardin, Table of n, a(n) for n=0..500

CROSSREFS

Sequence in context: A205727 A039823 A079972 * A071241 A068062 A088169

Adjacent sequences:  A164141 A164142 A164143 * A164145 A164146 A164147

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Aug 11 2009

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

Content is available under The OEIS End-User License Agreement .

Last modified February 16 08:10 EST 2012. Contains 205889 sequences.