A200825 Number of n X 2 0..5 arrays with every row and column running average nondecreasing rightwards and downwards.

21, 196, 1630, 12776, 96511, 709506, 5112134, 36238976, 253579683, 1755615191, 12048364111, 82078204820, 555669049602, 3741805083510, 25080702664546, 167435417347772, 1113826183859653, 7386330575306323, 48846398558444346

Offset

1,1

Comments

Column 2 of A200831.

Links

R. H. Hardin, Table of n, a(n) for n = 1..116

Example

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

Crossrefs

Sequence in context: A164606 A027780 A108679 * A058086 A270957 A159857

Adjacent sequences: A200822 A200823 A200824 * A200826 A200827 A200828

Keyword

nonn

Author

R. H. Hardin, Nov 23 2011

Status

approved