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A200174
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Number of -1..1 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, 1, 3, 3, 2, 6, 10, 7, 12, 28, 29, 29, 70, 105, 96, 169, 327, 363, 449, 914, 1302, 1426, 2455, 4220, 5030, 6925, 12579, 17582, 21687, 36154, 57823, 73301, 106333, 179101, 250064, 332708, 538040, 825039, 1097810, 1630708, 2613839, 3676575, 5125886
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OFFSET
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1,3
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COMMENTS
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LINKS
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EXAMPLE
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All solutions for n=6
.-1...-1....1....0....1....1
..0....0...-1....1....0...-1
..1....1....0...-1....1....0
.-1....0...-1....0...-1....1
..0....1....0....1....0...-1
..1...-1....1...-1...-1....0
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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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