A201103 Number of nX3 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

90, 334, 2052, 235661, 659775, 44795285, 1777011587, 875626837, 945490859978, 11683020413431

Offset

1,1

Comments

Column 3 of A201105

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A331259 A245866 A157888 * A234991 A234984 A158490

Adjacent sequences: A201100 A201101 A201102 * A201104 A201105 A201106

Keyword

nonn

Author

R. H. Hardin Nov 26 2011

Status

approved