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A211731 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 four, five or six distinct values for every i,j,k<=n 1
36, 170, 532, 1458, 3800, 10014, 26052, 70202, 188180, 522042, 1439540, 4085606, 11496000, 33144154, 94513280, 275391210, 792226416, 2325106662, 6728275612, 19846394074, 57663996620, 170698669690, 497380837436, 1476128070406 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

EXAMPLE

Some solutions for n=5

..2....3...-2....0....0....2...-2...-3...-1....3....2...-3...-3...-3...-3...-3

..3....1....1....2....1...-1...-3....1....0...-1....0...-1....2....1....2...-1

..0....2....0....3....3...-2....2...-3...-2....3....3...-3...-3...-3....1...-3

..3....0...-1....2....1....1....1....2....0....1....0...-2....0....1...-3...-1

..2....1....2....1....2...-2....2...-3...-2....3...-3....0...-3....2....2....2

..3....0....3....0....1....1....1....2....0....1....0...-2....2....3...-3....1

CROSSREFS

Sequence in context: A231972 A330770 A166708 * A211742 A211751 A211762

Adjacent sequences:  A211728 A211729 A211730 * A211732 A211733 A211734

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 20 2012

STATUS

approved

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Last modified May 8 15:28 EDT 2021. Contains 343666 sequences. (Running on oeis4.)