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 A204599 Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally, vertically or nw-to-se diagonally exactly one way 1
 3562, 144168, 981914, 10978524, 207096000, 1719348416, 20253298532, 382905131328, 3179075221184, 37448348985668, 707991587825472, 5878110083969216, 69241997274500132, 1309076445889297728 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A204607 LINKS R. H. Hardin, Table of n, a(n) for n = 1..17 EXAMPLE Some solutions for n=3 ..2..0..1..1..2....2..1..1..0..2....0..2..2..1..1....0..1..2..2..0 ..0..1..0..1..2....1..2..2..1..0....1..0..1..2..2....2..0..1..2..0 ..1..2..1..1..0....0..1..2..2..1....2..2..0..1..2....2..2..0..1..2 ..2..0..1..2..1....1..0..1..2..2....0..1..2..1..0....0..1..2..0..0 ..0..1..2..0..2....1..0..0..1..2....0..0..1..2..1....0..0..1..2..1 CROSSREFS Sequence in context: A107646 A204607 A204600 * A206090 A357590 A071144 Adjacent sequences: A204596 A204597 A204598 * A204600 A204601 A204602 KEYWORD nonn AUTHOR R. H. Hardin Jan 17 2012 STATUS approved

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Last modified December 1 04:40 EST 2023. Contains 367468 sequences. (Running on oeis4.)