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A200175
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Number of -2..2 arrays x(0..n-1) of n elements with zero sum and no two consecutive declines, no adjacent equal elements, and no element more than one greater than the previous (random base sawtooth pattern)
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1
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1, 2, 3, 6, 12, 15, 29, 72, 133, 214, 394, 853, 1782, 3087, 5597, 11777, 24069, 45200, 83805, 167284, 342971, 664695, 1257505, 2476990, 4999659, 9864713, 19023479, 37228518, 74480796, 147868410, 288747975, 565957525, 1124938149, 2237002991
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OFFSET
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1,2
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COMMENTS
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Column 2 of A200181
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..200
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EXAMPLE
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All solutions for n=6
..1....2....1...-1....2....1...-2....0...-1....2....0....0....0....2....0
..0...-2...-1....0....1...-1...-1...-1....0....0....1....1...-2....0....1
..1...-1....0....1....2....0....0....0....1....1....2...-1...-1....1....2
.-1....0....1...-1...-2...-1....1....1....0...-2...-2....0....0...-1...-1
..0....1...-1....0...-1....0....2....2....1...-1...-1....1....1....0....0
.-1....0....0....1...-2....1....0...-2...-1....0....0...-1....2...-2...-2
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CROSSREFS
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Sequence in context: A070926 A226023 A124485 * A125867 A032727 A174801
Adjacent sequences: A200172 A200173 A200174 * A200176 A200177 A200178
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Nov 13 2011
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STATUS
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approved
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