A211732 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 or six distinct values for every i,j,k<=n

48, 306, 1016, 2722, 6868, 17054, 41920, 105654, 267306, 699930, 1842080, 5008110, 13630092, 38145758, 106346040, 303695658, 860469558, 2491030532, 7134136098, 20845113942, 60132267140, 176824000698, 512627653118, 1514185540302

Offset

1,1

Links

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

Example

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

Crossrefs

Sequence in context: A215262 A097639 A222773 * A211743 A211752 A211763

Adjacent sequences: A211729 A211730 A211731 * A211733 A211734 A211735

Keyword

nonn

Author

R. H. Hardin Apr 20 2012

Status

approved