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A233405 Number of (n+1)X(4+1) 0..2 arrays with row and column sums nondecreasing, and no adjacent elements equal 0
24, 100, 360, 1907, 6931, 21765, 86233, 274628, 965494, 3146010, 10444724, 33097949, 108522965, 338311791, 1086568168, 3360254074, 10607088651, 32550672493, 101662193862 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A233408

LINKS

Table of n, a(n) for n=1..19.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A042126 A157514 A100152 * A297798 A048529 A213842

Adjacent sequences:  A233402 A233403 A233404 * A233406 A233407 A233408

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2013

STATUS

approved

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Last modified October 27 16:33 EDT 2021. Contains 348287 sequences. (Running on oeis4.)