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A211744
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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 three, four, five, six or seven distinct values for every i,j,k<=n
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0
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36, 186, 760, 2676, 8688, 26700, 79680, 232312, 667992, 1901728, 5370088, 15113368, 42292140, 118400480, 329954824, 922231524, 2567058088, 7179940184, 20000771140, 56066665316, 156499989480, 440143385660
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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
..0....0...-2....3...-1....2....1...-1...-1....3....1...-2...-1...-3....2...-2
.-3...-2....0....0....0....0....0...-2...-3....0....0...-3...-2...-1....3....1
..1....0...-1....1...-3...-1....2....0...-1...-2....1...-2...-1....0....2...-2
.-3...-2....2...-2....0....0....1...-1...-2...-1....2....3....3...-1....1....1
..0....1....0....0....1....1....0....0...-1...-2...-1....1....1...-2...-3....2
.-3....2...-2...-1....2....2...-3....2...-3....0...-2...-3...-2...-1....0....3
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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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