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A233309 Number of (n+1)X(1+1) 0..4 arrays with row and column sums nondecreasing, and no adjacent elements equal 1
92, 463, 2311, 9822, 41192, 160280, 617500, 2278154, 8346612, 29720846, 105322406, 365709441, 1265566649, 4312665297, 14661080626, 49240073950, 165092049733, 548097358680, 1817406550199, 5977145363030, 19640272703424, 64090628827653 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A233311

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..115

EXAMPLE

Some solutions for n=5

..1..4....1..0....0..1....1..0....0..2....4..0....1..2....1..2....0..1....2..1

..3..2....0..2....1..0....2..1....3..0....1..3....2..1....0..3....3..2....0..4

..1..4....2..1....0..3....0..3....0..4....0..4....1..4....4..0....2..3....1..3

..4..1....0..3....2..1....3..1....3..1....4..1....4..1....1..3....3..2....0..4

..1..4....1..2....1..3....0..4....4..3....3..2....1..4....2..4....1..4....1..3

..4..2....2..1....0..4....1..3....3..4....2..4....4..1....4..2....2..3....3..2

CROSSREFS

Sequence in context: A100169 A100170 A233311 * A205992 A200425 A107343

Adjacent sequences:  A233306 A233307 A233308 * A233310 A233311 A233312

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 07 2013

STATUS

approved

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Last modified May 18 04:22 EDT 2021. Contains 343994 sequences. (Running on oeis4.)