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A203326 Number of nX4 0..2 arrays with the row and column sums nondecreasing 1
15, 510, 15300, 423595, 10809576, 261192161, 6027116491, 134485617080, 2917085859508, 61924067072669, 1290589596346709, 26510790447480014, 537817266328044268, 10801401586708316358, 215047466285433025231 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A203330

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A004703 A218188 A218365 * A092561 A218312 A218280

Adjacent sequences:  A203323 A203324 A203325 * A203327 A203328 A203329

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 31 2011

STATUS

approved

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Last modified June 29 20:36 EDT 2022. Contains 354913 sequences. (Running on oeis4.)