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A233610 Number of (n+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards 1
17064, 27826929, 345855899520, 32842430056859347, 23811740158656753556614, 131875420683502307856971387719, 5579329268797957710001574591451050376, 1803344684216195708245651510240850004883561345 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A233618

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A233618 A233619 A233611 * A121669 A247697 A218247

Adjacent sequences:  A233607 A233608 A233609 * A233611 A233612 A233613

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified June 19 11:52 EDT 2021. Contains 345128 sequences. (Running on oeis4.)