Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A145763
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A145763 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only either three adjacent vertically or three adjacent horizontally. +0
1
1, 1, 1, 1, 4, 7, 16, 35, 133, 363, 1590, 5600, 33892, 154647, 1163836, 6812622, 66760064, 504710757, 6331779830, 61565739001, 996948455181, 12487323542741, 259917683188595, 4189678086571772, 112326942697897637 (list; graph; listen)
OFFSET

1,5
CROSSREFS

Sequence in context: A051049 A108122 A027609 this_sequence A144916 A050357 A132334

Adjacent sequences: A145760 A145761 A145762 this_sequence A145764 A145765 A145766

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Oct 17 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 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.