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A239170 Number of (n+1) X (n+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors. 0
6, 82, 9604, 4140964, 9704723126, 108383467365104, 5817146886160257060 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A239178.

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

..1..1..1..0....1..1..0..0....0..1..1..1....0..0..1..1....0..0..0..0

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

CROSSREFS

Cf. A239178.

Sequence in context: A068253 A188806 A155811 * A112462 A283198 A186661

Adjacent sequences:  A239167 A239168 A239169 * A239171 A239172 A239173

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 11 2014

STATUS

approved

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Last modified January 22 01:28 EST 2022. Contains 350481 sequences. (Running on oeis4.)