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A230463 Number of n X n 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero. 0
0, 0, 114, 76518, 281740616, 8449174734112, 1929668277796729476, 3350063281301654212261806 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Diagonal of A230469.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0....0..0..2....0..0..2....0..1..0....0..1..1....0..0..2....0..1..0
..0..0..2....1..1..2....0..1..1....2..0..0....2..2..0....1..1..0....0..0..2
..1..2..1....0..2..0....0..2..0....1..2..2....1..0..2....0..2..1....2..2..1
CROSSREFS
Cf. A230469.
Sequence in context: A239654 A362797 A200577 * A200807 A084877 A060309
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 20 2013
STATUS
approved

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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)