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A203323 Number of n X n 0..2 arrays with the row and column sums nondecreasing 0
3, 32, 1510, 423595, 759320283, 9306918766618 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A203330

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A129431 A202806 A054780 * A222683 A134474 A096469

Adjacent sequences:  A203320 A203321 A203322 * A203324 A203325 A203326

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 31 2011

STATUS

approved

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Last modified December 7 14:52 EST 2016. Contains 278877 sequences.