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A183576 Half the number of n X n 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 0
0, 14, 814, 240358, 320224986, 1988200387149, 57140106100076100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A183584

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions with a(1,1)<=1 for 3X3

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

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

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

CROSSREFS

Sequence in context: A210817 A042519 A050983 * A002429 A064345 A269335

Adjacent sequences:  A183573 A183574 A183575 * A183577 A183578 A183579

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified July 18 15:41 EDT 2019. Contains 325144 sequences. (Running on oeis4.)