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A198620
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Number of n X 1 0..5 arrays with values 0..5 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
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1
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0, 1, 1, 2, 3, 6, 11, 23, 47, 103, 226, 518, 1200, 2866, 6939, 17184, 43133, 110122, 284485, 744297, 1965907, 5240825, 14072796, 38039586, 103368602, 282201932, 773327639, 2126010274, 5860104847, 16188449006, 44801184159, 124173477355
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