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A211757
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Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having four, six, seven or eight distinct values for every i,j,k<=n
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1
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36, 154, 576, 2024, 6800, 22568, 73472, 240760, 780588, 2570304, 8389972, 27928068, 92072644, 310034916, 1031933696, 3509571076, 11773984392, 40357220784, 136211521048, 469619503208, 1592083419460, 5512376842976, 18747568314652
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OFFSET
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1,1
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LINKS
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EXAMPLE
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Some solutions for n=5
..3...-2...-2....2...-2...-3...-2...-1....1....2....3...-3....0...-3...-1....0
.-2....1...-1....0...-1...-2....1...-2....2...-3....2....2....1...-1....0....1
..3....2....3....2...-3...-1...-2...-1....1...-2....1...-1....2....0...-1....3
..0...-1....2....0...-1...-2....3....3....2....3....2...-3....3...-1...-2....2
.-3...-2...-1....3...-3...-3...-2...-2....0....2....1...-1...-2....0...-1....3
.-2....3....2...-2...-2...-2....3...-1....2....3....2....2...-3...-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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