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A203492
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Number of 2Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns
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1
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3, 10, 80, 556, 3348, 20596, 134412, 888232, 5836068, 38457456, 255381636, 1704162724, 11399565860, 76433483528, 513785171540, 3461284463632, 23360156262164, 157908381404144, 1068981156413892, 7246198178206132
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=5
..0..2..0..2..2....1..0..1..2..0....2..1..0..2..1....1..1..1..2..1
..0..1..2..2..1....2..0..2..0..0....2..2..1..1..0....1..2..1..1..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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