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A250612 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing maximum of every two consecutive values in every row and column 0
81, 6166, 1690656, 1223112064, 2643367969909, 16037155132964687, 287962971695057053653, 15262784987977280564078690 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A250620

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A036354 A205887 A205199 * A228974 A178513 A016948

Adjacent sequences:  A250609 A250610 A250611 * A250613 A250614 A250615

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2014

STATUS

approved

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Last modified March 21 04:59 EDT 2019. Contains 321364 sequences. (Running on oeis4.)