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A209091 Number of nX7 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically 0
12793, 163660849, 1511450744648, 13741947409424169, 125502610636793867958, 1146755797140484005008568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A209092

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A184780 A206796 A206966 * A207133 A157509 A035916

Adjacent sequences:  A209088 A209089 A209090 * A209092 A209093 A209094

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 05 2012

STATUS

approved

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Last modified May 28 22:08 EDT 2022. Contains 354122 sequences. (Running on oeis4.)