A200988 Number of nX6 0..4 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
5, 226, 3157, 15023, 27000, 752271, 8434277, 39361323, 80878071, 64001290, 1061617971, 6885026630, 20690808333, 29111264965, 15934951732, 200246707818, 986856290325, 2324162438865, 2632647531203, 1170193845706, 12359035000524
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..0..0..1..1..4....0..0..1..1..2..3....0..0..1..1..2..2....0..0..0..2..2..4 ..0..1..2..3..3..4....0..1..1..3..3..4....0..1..2..3..3..4....0..1..2..3..3..4 ..1..2..2..3..4..4....2..2..2..4..4..4....1..3..3..4..4..4....1..1..3..3..4..4
Links
- R. H. Hardin, Table of n, a(n) for n = 1..22
Comments