A201102 Number of n X 2 0..7 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

28, 140, 334, 103, 14881, 246332, 838638, 324469, 54328646, 960991707, 3157790020, 1057637803, 221465699177, 4636455864017, 17172840400292, 6213696250684, 1322921262723003, 27235717697960253, 96311573893944098, 32407513702617077

Offset

1,1

Comments

Column 2 of A201105.

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

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

Crossrefs

Cf. A201105.

Sequence in context: A239205 A050973 A095301 * A317680 A042530 A042532

Adjacent sequences: A201099 A201100 A201101 * A201103 A201104 A201105

Keyword

nonn

Author

R. H. Hardin, Nov 26 2011

Status

approved