A223959 Number of nX6 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing

84, 3906, 92734, 1718057, 30643468, 556027700, 10269723035, 191829887779, 3609049327918, 68212899813271, 1293084011261962, 24559344963113337, 467028467106529258, 8888318851289202078, 169249293097773923431

Offset

1,1

Comments

Column 6 of A223961

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A035737 A035806 A017747 * A143402 A004379 A075906

Adjacent sequences: A223956 A223957 A223958 * A223960 A223961 A223962

Keyword

nonn

Author

R. H. Hardin Mar 29 2013

Status

approved