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A162130
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Number of nXn symmetric 0..5 arrays with rows, considered as 6-ary numbers, in strictly increasing order
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1
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6, 105, 8225, 2926875, 4979240000, 42202810636875, 1834917191105643750, 417950382118605762343750, 506715938159533635294561406250, 3310954206264728900087517291318046875
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