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Search: id:A162074
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| A162074 |
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Number of nXn symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an even number of ones in each row |
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| 1, 2, 3, 8, 31, 187, 2283, 42743, 1641965, 103253028, 12810578372, 2750743641417, 1126452639815250, 830354090187673737, 1152099822267599547753
(list; graph; listen)
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