OFFSET
1,5
COMMENTS
Rotations and reflections of placements are not counted. If they are to be counted, see A194788.
EXAMPLE
There are 39 non-equivalent ways to place 7 non-attacking kings on a 5 X 5 board, e.g., this one:
K...K
.....
K.K.K
.....
K...K
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Heinrich Ludwig, Dec 10 2016
STATUS
approved