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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A147091 Number of n X n binary arrays with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation. 0
1, 1, 1, 5, 19, 87, 337, 1993, 25339, 376795, 8378039, 203827787, 6728351645, 320530236227 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

EXAMPLE

Maximal 8 X 8 example

.0.1.1.1.1.0.0.0

.0.1.0.0.0.1.0.0

.0.1.0.0.0.1.0.0

.0.1.0.0.0.1.0.1

.1.0.1.1.1.1.0.1

.1.0.0.0.0.0.0.1

.1.0.0.0.1.1.1.1

.1.1.1.1.0.0.0.0

CROSSREFS

Sequence in context: A149795 A149796 A005191 * A149797 A149798 A149799

Adjacent sequences:  A147088 A147089 A147090 * A147092 A147093 A147094

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Nov 04 2008

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 17 18:41 EST 2012. Contains 206074 sequences.