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Search: id:A162120
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| A162120 |
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Number of nXn binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 3 ones in any row or column |
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+0
1
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| 2, 4, 25, 315, 5449, 125232, 3664172, 131659282, 5664283770, 286246908181
(list; graph; listen)
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