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A300344
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Number of n X 2 0..1 arrays with every element equal to 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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5
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1, 2, 6, 15, 37, 90, 223, 550, 1355, 3341, 8237, 20307, 50064, 123426, 304290, 750185, 1849478, 4559634, 11241151, 27713513, 68323858, 168443083, 415273274, 1023799191, 2524036217, 6222664445, 15341124083, 37821433280, 93243546406
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