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!)
A146446 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 11, 17, 249, 505, 5595, 13277, 255723, 714985, 48904687, 172919585, 23239333565, 103253283519, 18873899120725, 102743668838719, 32633484992496285, 217183989203759529, 151537474245121050379 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

Maximal 8 X 8 example

.1.0.0.0.0.0.0.1

.1.1.0.0.0.0.1.1

.0.1.1.0.0.1.1.0

.0.0.1.0.0.1.0.0

.1.0.0.0.0.0.0.1

.1.1.0.0.0.0.1.1

.0.1.1.0.0.1.1.0

.0.0.1.0.0.1.0.0

CROSSREFS

Sequence in context: A262552 A279332 A286959 * A228055 A132092 A226258

Adjacent sequences:  A146443 A146444 A146445 * A146447 A146448 A146449

KEYWORD

nonn

AUTHOR

R. H. Hardin

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 24 17:51 EDT 2021. Contains 345419 sequences. (Running on oeis4.)