Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A133413
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A133413 Half the number of ways of placing up to n^2 pawns on an n x n chessboard so that it balances at its midpoint. +0
2
1, 2, 24, 492, 202064, 100202536, 888531141152, 8548846756027594, 1400822035743239844640, 241149984205773848119833656, 691305758149247080625180837349904 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A103904 A003102 A052712 this_sequence A012236 A138450 A054946

Adjacent sequences: A133410 A133411 A133412 this_sequence A133414 A133415 A133416

KEYWORD

nonn

AUTHOR

Ron Hardin (rhh(AT)cadence.com), Nov 25 2007

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 July 26 23:19 EDT 2008. Contains 142293 sequences.


AT&T Labs Research