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A200983 Number of n X n 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 0
5, 10, 92, 1225, 4919, 752271, 29555346, 1278883650, 65182166083, 731587297275 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A200990

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..0..0..1....0..2..3....0..1..2....0..0..2....0..1..1....0..1..3....0..2..2

..1..3..4....1..2..4....0..2..3....1..2..3....2..3..4....0..1..4....1..3..3

..2..3..4....1..3..4....1..4..4....1..3..4....2..3..4....2..2..4....1..4..4

CROSSREFS

Sequence in context: A325583 A344194 A120598 * A344140 A267042 A119137

Adjacent sequences:  A200980 A200981 A200982 * A200984 A200985 A200986

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 25 2011

STATUS

approved

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Last modified December 2 13:02 EST 2021. Contains 349441 sequences. (Running on oeis4.)