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A201513
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Number of ways to place n nonattacking kings on an n X n board.
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11
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1, 1, 0, 8, 79, 1974, 62266, 2484382, 119138166, 6655170642, 423677826986, 30242576462856, 2390359529372724, 207127434998494421, 19516867860507198208, 1986288643031862123264, 217094567491104327256049, 25357029929230564723578520, 3151672341378566296926684684
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OFFSET
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0,4
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LINKS
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FORMULA
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Asymptotics (Vaclav Kotesovec, Nov 29 2011): n^(2n)/n!*exp(-9/2).
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CROSSREFS
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KEYWORD
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nonn,nice
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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