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 A183576 Half the number of n X n 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 0
 0, 14, 814, 240358, 320224986, 1988200387149, 57140106100076100 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A183584 LINKS EXAMPLE Some solutions with a(1,1)<=1 for 3X3 ..0..3..3....0..0..3....1..1..3....1..1..0....1..3..0....1..2..2....1..1..1 ..0..3..0....0..3..3....1..1..3....1..0..0....1..3..0....1..1..1....1..1..1 ..0..3..0....0..0..3....3..3..3....1..0..0....1..3..0....3..3..3....1..2..2 CROSSREFS Sequence in context: A210817 A042519 A050983 * A002429 A064345 A269335 Adjacent sequences:  A183573 A183574 A183575 * A183577 A183578 A183579 KEYWORD nonn AUTHOR R. H. Hardin Jan 05 2011 STATUS approved

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Last modified July 18 15:41 EDT 2019. Contains 325144 sequences. (Running on oeis4.)