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A211729 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 or six distinct values for every i,j,k<=n 1
48, 230, 674, 1788, 4578, 11854, 30704, 81648, 217702, 595826, 1629412, 4562734, 12717112, 36221068, 102357152, 295195208, 842598926, 2452480406, 7051866394, 20665527346, 59743571278, 175966514172, 510748673328, 1510003478102 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..57

EXAMPLE

Some solutions for n=5

..0....0....1....0...-2...-2....1....2...-1...-3....0....2....1...-3....0....0

..1...-1....0...-1...-2....3....2....1....0...-2....2...-1....3...-3...-3....1

..2....0....1....0....3...-1....2...-2...-1...-1....2....2....1....0....0....2

.-1...-1....1....1...-2....3....3...-3...-1....0....2...-1....3...-3....1....2

..0....2....0...-2....3...-1....3...-2....0...-2....2...-3....0...-3....2....2

..3....1....1...-1...-2...-2....2...-3....3....0....0...-1....3...-3....1....3

CROSSREFS

Sequence in context: A235542 A269014 A265422 * A211738 A211749 A211758

Adjacent sequences:  A211726 A211727 A211728 * A211730 A211731 A211732

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 20 2012

STATUS

approved

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Last modified September 18 03:01 EDT 2021. Contains 347504 sequences. (Running on oeis4.)