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 A205346 Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..3 introduced in row major order 0
 15, 1750, 1080457, 2423004172, 21200252524407 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A205352 LINKS EXAMPLE Some solutions for n=4 ..0..0..1..2..0....0..0..0..1..0....0..0..0..1..1....0..1..0..2..1 ..3..0..2..3..3....0..0..2..3..3....2..0..0..0..2....3..0..0..1..0 ..0..2..2..0..0....1..2..0..3..0....0..3..3..1..3....2..0..0..1..3 ..0..0..3..2..1....0..1..0..3..1....1..3..3..1..0....3..2..1..3..3 ..0..0..3..0..2....2..1..0..2..3....3..0..1..0..0....3..0..2..3..3 CROSSREFS Sequence in context: A195521 A122184 A069450 * A208868 A070862 A077730 Adjacent sequences: A205343 A205344 A205345 * A205347 A205348 A205349 KEYWORD nonn AUTHOR R. H. Hardin Jan 26 2012 STATUS approved

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Last modified March 30 07:38 EDT 2023. Contains 361606 sequences. (Running on oeis4.)