A200894 Number of n X n 0..5 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.

6, 30, 1848, 352339, 218373106

Offset

1,1

Comments

Diagonal of A200902.

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A130075 A066388 A222718 * A202861 A088256 A136349

Adjacent sequences: A200891 A200892 A200893 * A200895 A200896 A200897

Keyword

nonn

Author

R. H. Hardin, Nov 23 2011

Status

approved