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A302005
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Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
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1
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1, 8, 240, 25808, 9989376, 13918667808, 69786476414080, 1259406594247832896, 81801738558534434812512, 19123141293346274424868082896, 16090014430301966976090685132636800
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