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A233404 Number of (n+1)X(3+1) 0..2 arrays with row and column sums nondecreasing, and no adjacent elements equal 1
22, 35, 211, 360, 1461, 2543, 8732, 15431, 46953, 84143, 236070, 431533, 1139832, 2108530, 5322489, 9995589, 24398272, 46169416, 109661296, 209717615, 488266741, 937818172, 2145733905, 4151538574, 9381737335, 18189661542, 40631596581 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A233408

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..67

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A245365 A100039 A061561 * A167277 A084141 A259736

Adjacent sequences:  A233401 A233402 A233403 * A233405 A233406 A233407

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2013

STATUS

approved

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Last modified December 5 06:52 EST 2021. Contains 349543 sequences. (Running on oeis4.)