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A233092 Number of n X n 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
1, 11, 941, 342626, 537122150, 3584186808548, 102515478543489824, 12560894457658675727999, 6600737461966058033047530086, 14879494526383664062686710158410323 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A233098
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1....0..1..0....0..1..0....0..1..3....0..0..1....0..1..0....0..1..0
..2..0..0....0..2..3....0..0..0....3..2..0....2..0..0....0..1..3....3..1..3
..2..2..2....0..1..0....1..1..0....0..2..0....0..0..1....3..2..0....3..1..0
CROSSREFS
Sequence in context: A176709 A336800 A083816 * A302374 A243818 A278864
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 04 2013
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)