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A250651
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Number of length 7+1 0..n arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero
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1
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120, 2870, 28238, 163043, 677505, 2225195, 6290716, 15474251, 34620063, 71045837, 136895633, 249167782, 432945014, 721867127, 1163471851, 1819556318, 2767225673, 4114863787, 5983678292, 8546815362, 11983543443, 16566644515
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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=4
..4....2....3....3....1....4....1....1....2....4....4....1....1....0....0....0
..0....2....2....1....0....1....0....1....0....0....1....1....2....1....2....0
..1....3....4....0....1....4....2....0....4....3....4....0....3....4....2....4
..1....4....4....4....4....0....0....3....2....3....0....2....0....1....1....1
..1....4....3....4....4....4....1....1....3....0....0....3....1....0....1....0
..0....0....3....1....2....0....1....3....0....4....0....1....0....0....0....1
..0....1....3....0....2....2....0....3....2....0....2....2....4....2....3....1
..0....2....3....1....1....0....4....4....1....3....1....4....2....2....2....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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