A223960 Number of nX7 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing

120, 7470, 217144, 4500818, 85350934, 1629022329, 31770135236, 629825651180, 12620835427126, 254719515611821, 5165793380135728, 105110696722615853, 2143594088287821599, 43784293043682987873, 895295525455930993505

Offset

1,1

Comments

Column 7 of A223961

Links

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

Example

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

Crossrefs

Sequence in context: A035815 A001785 A270848 * A351223 A156411 A076005

Adjacent sequences: A223957 A223958 A223959 * A223961 A223962 A223963

Keyword

nonn

Author

R. H. Hardin Mar 29 2013

Status

approved