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Search: id:A129898
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| A129898 |
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Number of ways of placing non-attacking knights on a n X n chessboard symmetric under horizontal and vertical reflection. |
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1
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| 1, 2, 2, 10, 7, 63, 38, 1252, 456, 42951, 11051, 2411116, 461788, 300699154, 38535499, 76231743090, 6586274655, 36545866507976, 2160036716063, 34857588279065543, 1397443585027894, 67527452467684091249
(list; graph; listen)
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OFFSET
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0,2
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KEYWORD
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nonn,new
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AUTHOR
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Ron Hardin (rhh(AT)cadence.com), Aug 25 2008
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