Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A145237
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A145237 1/3 of the number of 3-colorings of an n X n array symmetric about main diagonal. +0
1
1, 4, 24, 216, 2952, 61488, 1957392, 95392296, 7125411888, 816458567400, 143601085430064, 38787148664334000, 16094818374887017440, 10263152688155204724288, 10059484565080507620249504 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A112141 A077555 A166881 this_sequence A034256 A074598 A052718

Adjacent sequences: A145234 A145235 A145236 this_sequence A145238 A145239 A145240

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Oct 05 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 November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research

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