A211763 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, seven or eight distinct values for every i,j,k<=n

48, 306, 1732, 9066, 44218, 203952, 901938, 3863236, 16173336, 66608806, 271211310, 1096118176, 4408568100, 17688124818, 70884256140

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Example

Some solutions for n=5
..0...-1...-1....0....3....3....2...-3....2....2....2....3...-1....1....1....2
.-3...-3....1...-3....2....3....2...-1....1....0...-2....3....1...-2...-2...-2
..1....3...-2....1....0...-3....3....0....2....3....2....1....2....1...-3...-2
.-3...-3...-2....1....2....2...-1...-3....1...-2....3....2....2....3....1....3
.-1...-3...-3...-3...-2....3...-2...-2...-1...-1...-2....2....1...-3...-2....2
.-2...-3....1...-3....3....1...-1....3....2....3....3....0...-1...-3...-3....2

Crossrefs

Sequence in context: A211732 A211743 A211752 * A134607 A192215 A347613

Adjacent sequences: A211760 A211761 A211762 * A211764 A211765 A211766

Keyword

nonn

Author

R. H. Hardin Apr 20 2012

Status

approved