A200854 Number of nX4 0..4 arrays with every row and column running average nondecreasing rightwards and downwards.
113, 3728, 103528, 2604826, 61846403, 1408572430, 31197299012, 676213941385, 14409889137860, 302739147144202, 6285532293756352, 129206691796171679, 2633609665501923727, 53291436966934467972, 1071555955172980827276
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..0..2..2....0..2..1..2....1..1..2..3....0..0..1..1....0..1..1..2 ..1..3..2..4....0..2..4..4....1..4..3..3....0..1..2..2....1..2..3..2 ..2..2..4..3....1..2..3..4....1..3..3..3....1..1..2..2....1..2..2..4
Links
- R. H. Hardin, Table of n, a(n) for n = 1..18
Comments