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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A147358 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0110-0110-1111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 3, 8, 19, 34, 51, 134, 355, 989, 3419, 12452 (list; graph; refs; listen; history; internal format)
OFFSET

1,7

EXAMPLE

Maximal 8 X 8 example

.0.0.0.1.1.1.1.0

.1.0.0.0.1.1.0.0

.1.1.1.0.1.1.0.0

.1.1.1.0.0.0.0.1

.1.0.0.0.0.1.1.1

.0.0.1.1.0.1.1.1

.0.0.1.1.0.0.0.1

.0.1.1.1.1.0.0.0

CROSSREFS

Sequence in context: A113535 A184444 A139020 * A086167 A083186 A055341

Adjacent sequences:  A147355 A147356 A147357 * A147359 A147360 A147361

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

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 14 23:53 EST 2012. Contains 205689 sequences.