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A200148
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Number of 0..2 arrays x(0..n-1) of n elements with zero n-1st difference
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0
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1, 3, 5, 9, 15, 39, 45, 129, 149, 243, 369, 1365, 2061, 5901, 5951, 7785, 10519, 42519, 59473, 213561, 157559, 278835, 503513, 1553481, 1051639, 2491707, 2981747, 6622209, 10056593, 34139241
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=6
..0....0....1....1....2....2....2....1....2....2....2....0....2....0....1....1
..2....1....0....2....2....0....2....2....1....0....0....0....0....0....0....0
..1....2....0....0....1....1....2....1....0....0....0....0....2....0....0....1
..1....2....0....0....0....1....2....0....0....0....1....0....2....1....1....1
..2....1....0....2....0....0....2....0....1....0....2....0....0....2....2....0
..0....0....1....1....2....2....2....1....2....2....2....0....2....0....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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