A211762 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 four, five, six, seven or eight distinct values for every i,j,k<=n

36, 170, 744, 3058, 12048, 45768, 170020, 618088, 2217032, 7850692, 27545188, 95924784, 331693024, 1142415700, 3911185396, 13370835896, 45462050832, 154638073332, 523283349484, 1774064765080, 5983947707352, 20245716124732

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..26

Example

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

Crossrefs

Sequence in context: A211731 A211742 A211751 * A219858 A307958 A348962

Adjacent sequences: A211759 A211760 A211761 * A211763 A211764 A211765

Keyword

nonn

Author

R. H. Hardin Apr 20 2012

Status

approved