A211734 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 one, three, four, five or six distinct values for every i,j,k<=n

37, 199, 677, 1955, 5323, 14313, 37885, 102041, 273511, 749531, 2046981, 5707517, 15836459, 44772949, 125719807, 359222809, 1017627511, 2931555923, 8360495347, 24240841339, 69495187871, 202554449245, 583137465157, 1706970835321

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..35

Example

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

Crossrefs

Sequence in context: A221571 A053872 A141954 * A211745 A211754 A211765

Adjacent sequences: A211731 A211732 A211733 * A211735 A211736 A211737

Keyword

nonn

Author

R. H. Hardin Apr 20 2012

Status

approved