|
|
A279117
|
|
Number of non-equivalent ways to place n non-attacking kings on an n X n board.
|
|
7
|
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
Rotations and reflections of placements are not counted. If they are to be counted, see A201513.
|
|
LINKS
|
|
|
EXAMPLE
|
There are 14 non-equivalent ways to place 4 non-attacking kings on a 4 X 4 board, e.g., this one:
K..K
....
....
K..K
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|