A200710 Number of n X 4 0..7 arrays with every row and column running average nondecreasing rightwards and downwards.

638, 95567, 12904303, 1630978608, 195675787426, 22525604271509, 2512851095363929, 273566206900264111, 29225435372492971841, 3075465941063432826683, 319691253286956006425052

Offset

1,1

Comments

Column 4 of A200713.

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=3
..0..0..0..0....0..0..0..0....0..0..1..1....0..0..0..1....0..0..1..1
..0..4..2..3....1..1..3..3....0..0..1..1....0..2..1..1....0..0..3..2
..0..3..4..3....1..3..3..5....5..6..6..7....2..2..2..5....1..3..2..4

Crossrefs

Cf. A200713.

Sequence in context: A210883 A360183 A281884 * A250661 A250587 A293922

Adjacent sequences: A200707 A200708 A200709 * A200711 A200712 A200713

Keyword

nonn

Author

R. H. Hardin Nov 20 2011

Status

approved