A226427 Number of nondecreasing -n..n vectors of length 6 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 6

7, 180, 847, 2689, 7102, 17203, 35451, 67982, 123055, 211156, 347133, 549278, 842128, 1254702, 1822955

Offset

1,1

Comments

Row 6 of A226422

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Sequence in context: A231489 A221110 A142256 * A226550 A141983 A080484

Adjacent sequences: A226424 A226425 A226426 * A226428 A226429 A226430

Keyword

nonn

Author

R. H. Hardin Jun 06 2013

Status

approved