Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A147191
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A147191 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 11000-01110-00011 pattern in any orientation. +0
1
1, 1, 1, 1, 1, 1, 1, 3, 11, 21, 45, 95, 317, 775, 2631, 8089, 34521, 128479, 651913, 2804553, 16941209, 86096205, 609652687 (list; graph; listen)
OFFSET

1,8

EXAMPLE

Maximal 8 X 8 example

.1.0.0.0.0.0.1.1

.1.1.0.0.1.1.1.0

.0.1.0.1.1.0.0.0

.0.1.1.0.0.1.0.0

.0.0.1.0.0.1.1.0

.0.0.0.1.1.0.1.0

.0.1.1.1.0.0.1.1

.1.1.0.0.0.0.0.1

CROSSREFS

Sequence in context: A082485 A064568 A147073 this_sequence A034185 A158653 A129215

Adjacent sequences: A147188 A147189 A147190 this_sequence A147192 A147193 A147194

KEYWORD

nonn

AUTHOR

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

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


AT&T Labs Research