A251115 Number of (n+1)X(2+1) 0..3 arrays with nondecreasing maximum of every two consecutive values in every row and column

2500, 64660, 1494029, 27945953, 480842776, 7521121248, 111353209662, 1565216316524, 21222352910300, 278794962294706, 3575143198989419, 44910526954802560, 554888528859073528, 6760076062454651486

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