A202514 Number of zero-sum -n..n arrays of 6 elements with first through third differences also in -n..n

9, 53, 255, 883, 2369, 5429, 11015, 20519, 35743, 58863, 92683, 140431, 206133, 294575, 410949, 561639, 753393, 994367, 1293591, 1660765, 2107089, 2644313, 3285935, 4046931, 4942529, 5990419, 7208417, 8617099, 10238327, 12094665

Offset

1,1

Comments

Row 6 of A202511

Links

R. H. Hardin, Table of n, a(n) for n = 1..135

Example

Some solutions for n=7
.-3....6....5....4....3....6...-5....1...-4...-1...-1...-3....2...-2...-7...-1
.-6....1....3....4....6....0...-1....2...-1...-2....5...-6....1....4...-1....1
.-3...-1....0....2....3....0....3...-1....2....0....4...-3...-3....3....4....3
..2...-4...-3...-2...-2....0....5...-1....2...-1...-1....1...-3....2....3....0
..6...-2...-4...-5...-6....0....1....0....1....1...-3....4....0....0....0...-2
..4....0...-1...-3...-4...-6...-3...-1....0....3...-4....7....3...-7....1...-1

Crossrefs

Sequence in context: A036425 A126085 A055854 * A005025 A122588 A277999

Adjacent sequences: A202511 A202512 A202513 * A202515 A202516 A202517

Keyword

nonn

Author

R. H. Hardin Dec 20 2011

Status

approved