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Search: id:A068940
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| A068940 |
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Maximal number of chess queens that can be placed on a 3-dimensional chess board of order n so that no two queens attack each other. |
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3
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| 1, 1, 4, 7, 13, 21, 32, 48, 67, 91, 121, 133, 169
(list; graph; listen)
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