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A229514
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Number of n X 1 0..2 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1) X 2 0..2 array without adjacent equal elements in the latter.
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1
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3, 7, 17, 39, 91, 211, 491, 1141, 2653, 6167, 14337, 33329, 77481, 180121, 418731, 973431, 2262953, 5260727, 12229707, 28430619, 66093171, 153647981, 357188221, 830361871, 1930357153, 4487535937, 10432255377, 24252051409, 56379179411
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