A200985 Number of nX3 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

10, 20, 92, 537, 140, 3157, 3604, 6692, 26168, 5408, 84188, 69613, 118244, 371475, 57479, 864418, 645309, 916025, 2639447, 387005, 5166751, 3514237, 4833175, 12896465, 1709869, 22408038, 14621090, 18653741, 47941297, 6213321, 76880715

Offset

1,1

Comments

Column 3 of A200990

Links

R. H. Hardin, Table of n, a(n) for n = 1..103

Example

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

Crossrefs

Sequence in context: A131726 A276764 A215878 * A375232 A375243 A166641

Adjacent sequences: A200982 A200983 A200984 * A200986 A200987 A200988

Keyword

nonn

Author

R. H. Hardin Nov 25 2011

Status

approved