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A200459 Number of -n..n arrays x(0..6) of 7 elements with zero sum and nonzero first and second differences 1
14, 1582, 19802, 115140, 451708, 1375006, 3513884, 7910100, 16176994, 30639164, 54582252, 92444962, 150029642, 234839570, 356372880, 526276044, 758938962, 1071722528, 1485196016, 2023848468, 2716453852, 3596089776, 4701336350 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A200454

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..96

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A160246 A145693 A279326 * A164524 A322848 A206644

Adjacent sequences:  A200456 A200457 A200458 * A200460 A200461 A200462

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 18 2011

STATUS

approved

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Last modified June 2 17:02 EDT 2020. Contains 334787 sequences. (Running on oeis4.)