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A233029 Number of (n+1)X(2+1) 0..3 arrays with row and column sums nondecreasing, and no adjacent elements equal 1
96, 642, 3132, 16296, 77353, 337570, 1459711, 6131600, 25014797, 100647020, 399073108, 1561490768, 6050110218, 23239177456, 88590795541, 335553550058, 1263942149575, 4737487677280, 17680474805387, 65735112648424 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A233031

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..25

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A183684 A251167 A251160 * A216106 A268795 A232405

Adjacent sequences:  A233026 A233027 A233028 * A233030 A233031 A233032

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 03 2013

STATUS

approved

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Last modified May 19 23:40 EDT 2022. Contains 353847 sequences. (Running on oeis4.)