A224280 Number of nX7 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing

1163, 180821, 8626382, 233090092, 4728056658, 86539248276, 1597855917875, 31198793873704, 648539832987579, 14190379537730766, 321738654013526452, 7458658599338643026, 175162125039011466648, 4143668812111247607851

Offset

1,1

Comments

Column 7 of A224281

Links

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

Example

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

Crossrefs

Sequence in context: A223986 A224063 A224049 * A224203 A223761 A223875

Adjacent sequences: A224277 A224278 A224279 * A224281 A224282 A224283

Keyword

nonn

Author

R. H. Hardin Apr 02 2013

Status

approved