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Search: id:A162135
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| A162135 |
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Number of nXn 0..3 arrays with rows and columns, considered as 4-ary numbers, in strictly increasing order |
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1
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| 4, 70, 12282, 20383931, 337547720906, 59996420905835268, 121724323699826555003445, 2953782468893892488974599595107
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