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A231113 Number of 7Xn 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero 1
0, 0, 5208, 318864, 19662930, 1459796386, 110728004898, 8325135556908, 625222341211040, 46996413742719636, 3534106116006985318, 265800575748345313780, 19992347081347722743586, 1503799843607486738579460 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row 7 of A231108
LINKS
EXAMPLE
Some solutions for n=4
..0..1..2..1....0..1..2..1....0..1..2..1....0..1..2..1....0..1..0..1
..0..3..0..3....0..3..0..1....0..3..2..1....0..3..2..0....2..3..2..1
..0..1..2..0....0..1..2..0....2..1..2..3....2..0..1..3....2..0..3..2
..3..0..1..0....0..3..1..2....0..3..0..3....3..2..0..1....1..2..1..0
..3..2..1..3....2..0..3..2....2..1..2..3....1..3..2..1....1..2..3..2
..1..3..0..1....3..2..3..2....0..3..0..3....2..1..3..0....1..2..1..2
..2..3..2..1....1..0..3..2....2..1..2..1....0..2..1..0....1..0..3..2
CROSSREFS
Sequence in context: A157511 A165599 A109159 * A289514 A031616 A067224
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)