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URL: https://oeis.org/A185085

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A185085
Number of ways to place n nonattacking nightriders on an n X n board.
2
1, 6, 36, 412, 4650, 85358, 1414678, 32042312, 710371744, 20080400872, 546562561108
OFFSET
1,2
COMMENTS
A nightrider is a fairy chess piece that can move any distance in a direction specified by a knight move.
CROSSREFS
Sequence in context: A071555 A077704 A080491 * A201540 A195229 A366654
KEYWORD
nonn,hard
AUTHOR
Vaclav Kotesovec, Dec 22 2011
STATUS
approved