A211753 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, six or eight distinct values for every i,j,k<=n.

36, 186, 804, 2968, 10092, 32712, 103184, 323816, 1008108, 3181896, 10019520, 32241100, 103445952, 339993680, 1110750880, 3717193820, 12320871456, 41800702528, 140023160932, 479705387124, 1618787129800, 5583205551016

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..34

Example

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

Crossrefs

Sequence in context: A102949 A211733 A211744 * A211764 A255093 A017138

Adjacent sequences: A211750 A211751 A211752 * A211754 A211755 A211756

Keyword

nonn

Author

R. H. Hardin, Apr 20 2012

Status

approved