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A181223
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Number of nX7 binary matrices with no three 1's adjacent in a line horizontally, vertically, diagonally or antidiagonally
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1
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81, 6561, 179097, 7426986, 316896477, 12297765846, 493466099722, 19886730240632, 794878208506289, 31852650059853831, 1277093175893680596, 51166967011661264756, 2050407503529684003122, 82170493913101130433607
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