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A251115 Number of (n+1)X(2+1) 0..3 arrays with nondecreasing maximum of every two consecutive values in every row and column 1
2500, 64660, 1494029, 27945953, 480842776, 7521121248, 111353209662, 1565216316524, 21222352910300, 278794962294706, 3575143198989419, 44910526954802560, 554888528859073528, 6760076062454651486 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A251120

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A253377 A253370 A204225 * A235439 A235404 A120408

Adjacent sequences:  A251112 A251113 A251114 * A251116 A251117 A251118

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 30 2014

STATUS

approved

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Last modified October 16 20:35 EDT 2019. Contains 328103 sequences. (Running on oeis4.)