A211733 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 three, four, five or six distinct values for every i,j,k<=n

36, 186, 620, 1780, 4840, 13108, 34968, 95300, 258084, 715112, 1970400, 5539668, 15468616, 43974160, 123983696, 355470488, 1009507724, 2914043384, 8322676556, 24159321760, 69319250572, 202175077828, 582318461756, 1705203219856

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..51

Example

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

Crossrefs

Sequence in context: A054979 A335219 A102949 * A211744 A211753 A211764

Adjacent sequences: A211730 A211731 A211732 * A211734 A211735 A211736

Keyword

nonn

Author

R. H. Hardin Apr 20 2012

Status

approved