A201026 Number of n X n 0..4 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

5, 10, 296, 30157, 2579473, 21586894705

Offset

1,1

Comments

Diagonal of A201033

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A248366 A297908 A298502 * A213146 A309558 A346104

Adjacent sequences: A201023 A201024 A201025 * A201027 A201028 A201029

Keyword

nonn

Author

R. H. Hardin Nov 26 2011

Status

approved