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A250528 Number of (n+1)X(n+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction 0
110, 6012, 393910, 28135982, 2039109478, 147966207622, 10608507190002, 752883908026920, 52789559542083230, 3668155942062924886, 252635964025577748788 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A250536

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A035836 A008395 A201213 * A251029 A111600 A111784

Adjacent sequences:  A250525 A250526 A250527 * A250529 A250530 A250531

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 24 2014

STATUS

approved

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Last modified September 20 12:44 EDT 2020. Contains 337264 sequences. (Running on oeis4.)