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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

R. H. Hardin, Table of n, a(n) for n = 1..33

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

Adjacent sequences:  A211740 A211741 A211742 * A211744 A211745 A211746

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 20 2012

STATUS

approved

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Last modified October 19 17:54 EDT 2021. Contains 348091 sequences. (Running on oeis4.)