A211755 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, three, four, five, six or eight distinct values for every i,j,k<=n

48, 330, 1836, 8280, 32740, 120728, 427390, 1483442, 5092432, 17465996, 59892736, 206614336, 715176178, 2495327868, 8742073364, 30872946806, 109440726728, 390821924176, 1400125471630, 5048928185428, 18254562891404, 66379155129368

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..25

Example

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

Crossrefs

Sequence in context: A223396 A211735 A211746 * A211504 A211766 A187164

Adjacent sequences: A211752 A211753 A211754 * A211756 A211757 A211758

Keyword

nonn

Author

R. H. Hardin Apr 20 2012

Status

approved