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A233104 Number of 7Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order 1
2080, 176474, 42601181, 9096692126, 2041493495546, 456588234876461, 102515478543489824, 23024927074137910892, 5173825911092637444752, 1162725416647139432330948, 261321301913409828133971236 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A233098

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A183675 A178272 A194605 * A071235 A259414 A233088

Adjacent sequences:  A233101 A233102 A233103 * A233105 A233106 A233107

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 04 2013

STATUS

approved

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Last modified May 19 23:40 EDT 2022. Contains 353847 sequences. (Running on oeis4.)