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A240655
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Number of nX7 0..1 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..1 introduced in row major order
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1
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1, 21, 402, 7154, 118863, 2076117, 37066859, 666849212, 12062165754, 218944306666, 3980414427158, 72424065007263, 1318344476372801, 24003514023779867, 437093903871650760, 7959828410582705257
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