login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A147465 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-1111-0011 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 7, 19, 33, 57, 137, 389, 1061, 3337, 12013, 46721, 194071, 871607, 4080549, 21286795, 118904521, 740082723, 4935470201, 36634269329 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

Table of n, a(n) for n=1..25.

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.1.1.0

.1.1.0.1.1.1.1.0

.1.1.0.1.1.0.0.0

.0.1.1.0.0.1.1.0

.0.1.1.0.0.1.1.0

.0.0.0.1.1.0.1.1

.0.1.1.1.1.0.1.1

.0.1.1.0.0.0.0.0

CROSSREFS

Sequence in context: A338410 A038869 A147503 * A053591 A165333 A154878

Adjacent sequences:  A147462 A147463 A147464 * A147466 A147467 A147468

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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 26 08:00 EDT 2022. Contains 354077 sequences. (Running on oeis4.)