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A211743 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, four, five, six or seven distinct values for every i,j,k<=n 1
48, 306, 1264, 4014, 11374, 30422, 78284, 199102, 499810, 1264496, 3193024, 8209318, 21162622, 55829010, 147730098, 400702654, 1087655474, 3024984632, 8389557884, 23809669192, 67140377402, 193464704214, 552197517234 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=5
.-3...-2....0....1....1...-3....2....2...-2....3....1....0...-2....1....3....0
..3...-1...-3....3....1....3...-2...-2...-2....2....1....1....1....2...-1....3
..3....0....0...-2....0....2....2....2....3....2....1....0...-2....3....3....0
.-3....1....3....3....1....1....1....0...-2....3....2....1....1...-1....3....3
.-3....2....0....0....1...-2...-2...-3....3....2....3....0...-2....3....3...-1
..3....3...-3....3....2....0....1....0....3....2....2...-1...-2...-1....3....1
CROSSREFS
Sequence in context: A097639 A222773 A211732 * A211752 A211763 A134607
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 20 2012
STATUS
approved

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Last modified March 28 13:19 EDT 2024. Contains 371254 sequences. (Running on oeis4.)