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A207576 Number of n X n 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically 0
4, 256, 196916, 1970169608, 257884387013510, 442453214562156086168 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207582

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A206789 A206961 A206569 * A209086 A207051 A207128

Adjacent sequences:  A207573 A207574 A207575 * A207577 A207578 A207579

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 19 2012

STATUS

approved

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Last modified June 29 10:17 EDT 2022. Contains 354913 sequences. (Running on oeis4.)