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A211755 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 two, three, four, five, six or eight distinct values for every i,j,k<=n 1
48, 330, 1836, 8280, 32740, 120728, 427390, 1483442, 5092432, 17465996, 59892736, 206614336, 715176178, 2495327868, 8742073364, 30872946806, 109440726728, 390821924176, 1400125471630, 5048928185428, 18254562891404, 66379155129368 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=5
.-3....0....2...-2....0....2...-2....1...-1...-2....2....0...-2....1....1....1
..0...-3...-1...-3....3...-2....1...-3...-1...-2....3...-1....0....3...-3...-3
..3...-3....3...-3....2...-2...-1...-3....1...-3....3...-3...-2....2...-1...-1
..0...-2....3...-3....2...-3...-1...-3...-3....2....0...-1....0...-3...-3...-1
.-1...-3....3...-1....2....1...-3...-3...-3...-1...-1....3....2...-2....1...-3
..2....1...-1...-1....2...-3...-3....3...-3...-3....2....3...-1...-3...-3....1
CROSSREFS
Sequence in context: A223396 A211735 A211746 * A211504 A211766 A187164
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 20 2012
STATUS
approved

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Last modified April 19 13:40 EDT 2024. Contains 371792 sequences. (Running on oeis4.)