A201441 Number of zero-sum -n..n arrays of 6 elements with first through fourth differences also in -n..n

9, 37, 167, 527, 1341, 3067, 6019, 11353, 19601, 32099, 50621, 75931, 112125, 159765, 222517, 304463, 406447, 538245, 699187, 897049, 1138935, 1425355, 1774971, 2184135, 2666551, 3233507, 3883865, 4649645, 5521247, 6521027, 7664967, 8949325

Offset

1,1

Comments

Row 6 of A201439

Links

R. H. Hardin, Table of n, a(n) for n = 1..56

Example

Some solutions for n=11
.-1....3....6...-4...-4....7....4....2....3...11....4...-1....0....3....2....1
..3....7...-3....2...-1....2....2...-8...-2....1....1....1...-1....5...-6...-1
.-1....6...-8....4...-1...-2....2...-7...-2...-5....3...-1...-3....5...-9...-2
.-3....0...-5....5...-4...-3....0....2....1...-5....3...-5...-2....0...-3...-1
..0...-8....1....0....0...-4...-2....8....3...-3...-1...-2...-1...-6....6....1
..2...-8....9...-7...10....0...-6....3...-3....1..-10....8....7...-7...10....2

Crossrefs

Sequence in context: A048878 A246315 A232250 * A183327 A364700 A199894

Adjacent sequences: A201438 A201439 A201440 * A201442 A201443 A201444

Keyword

nonn

Author

R. H. Hardin Dec 01 2011

Status

approved