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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A129898 Number of ways of placing non-attacking knights on an n X n chessboard symmetric under horizontal and vertical reflection. 0
1, 2, 2, 10, 7, 63, 38, 1252, 456, 42951, 11051, 2411116, 461788, 300699154, 38535499, 76231743090, 6586274655, 36545866507976, 2160036716063, 34857588279065543, 1397443585027894, 67527452467684091249 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A163808 A127058 A094359 * A135996 A141610 A019241

Adjacent sequences:  A129895 A129896 A129897 * A129899 A129900 A129901

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Aug 25 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 14 09:48 EST 2012. Contains 205614 sequences.