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A196811
Number of ways to place 3 nonattacking nightriders on an n X n cylindrical board
3
0, 0, 6, 144, 600, 1992, 4592, 15616, 31788, 74840, 122210, 251184, 384826, 647696, 1085190, 1616384, 2308872, 3449880, 4783326, 7052400, 9253734, 12454640, 16453096, 22180992, 28552450, 36216544, 46089162, 58449104, 72061346, 91140000, 109813780, 135448576
OFFSET
1,3
COMMENTS
A nightrider is a fairy chess piece that can move (proportionate to how a knight moves) in any direction.
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Oct 06 2011
STATUS
approved