A226408 Number of nondecreasing -5..5 vectors of length n whose dot product with some nondecreasing -5..5 vector equals n

2, 50, 240, 963, 2841, 7821, 18765, 43447, 91139, 184470, 348170, 642928, 1137525

Offset

1,1

Comments

Column 5 of A226410

Links

Table of n, a(n) for n=1..13.

Example

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

Crossrefs

Sequence in context: A318426 A265962 A318094 * A226337 A048610 A007511

Adjacent sequences: A226405 A226406 A226407 * A226409 A226410 A226411

Keyword

nonn

Author

R. H. Hardin Jun 06 2013

Status

approved