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Search: id:A102388
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| A102388 |
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Number of ways of placing n nonattacking Queens of the Night on an n X n board. |
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+0
1
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| 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 44, 6, 78, 8, 16, 18, 234, 124, 468
(list; graph; listen)
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OFFSET
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1,10
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COMMENT
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A Queen of the Night can move like a Queen or a Nightrider, which is a rider along straight lines of Knight moves.
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LINKS
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Noam D. Elkies, Chess Pages and Links.
P. Syski, S. J. Wernli, Queen of the Night on an n X n board.
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PROGRAM
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See C++ code on website.
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CROSSREFS
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Cf. A051223, A051224, A000170.
Sequence in context: A152282 A153255 A015084 this_sequence A071125 A053314 A051223
Adjacent sequences: A102385 A102386 A102387 this_sequence A102389 A102390 A102391
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KEYWORD
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hard,more,nonn
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AUTHOR
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Stefan Wernli, Peter Syski (swernli(AT)fas.harvard.edu), Jan 07 2005
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