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A211736 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 one, two, three, four, five or six distinct values for every i,j,k<=n 1
49, 343, 1421, 4551, 13555, 39169, 111793, 322077, 933135, 2752147, 8199745, 24862257, 76130649, 236603551, 741329977, 2350346441, 7498037945, 24138736345, 78063226797, 254189827701, 830340918003, 2726288861857, 8971039826201 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=5
.-3...-3....2....2....0....0....2....1...-3....0....3....3....2....1...-3....1
..1....3...-3...-1...-1....3....1...-3....1...-3....3....2....0...-3...-2...-1
.-3...-1....2...-2....1....0....2...-3....0....0....1....0....1...-2...-3....1
..2....1...-3...-3....3....1....3...-3....0...-3....3...-1....0...-1...-2...-1
.-3....1....1...-2....1....0....0....1...-2...-2....1...-2...-1...-2....3...-1
..2....1...-3...-1....2....1....1...-3....0...-3....1...-3...-2....2...-2...-1
CROSSREFS
Sequence in context: A020323 A036322 A036324 * A211747 A211756 A036323
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 20 2012
STATUS
approved

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Last modified April 19 11:30 EDT 2024. Contains 371791 sequences. (Running on oeis4.)