A211735 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 or six distinct values for every i,j,k<=n.

48, 330, 1336, 4204, 12376, 35520, 101096, 291658, 847968, 2515656, 7544020, 23042956, 71066182, 222455898, 701643848, 2238614428, 7182380086, 23244437414, 75523460968, 246963498566, 809749533116, 2667549489664, 8803343561560

Offset

1,1

Links

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

Example

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

Crossrefs

Sequence in context: A347613 A280022 A223396 * A211746 A211755 A211504

Adjacent sequences: A211732 A211733 A211734 * A211736 A211737 A211738

Keyword

nonn

Author

R. H. Hardin, Apr 20 2012

Status

approved