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 A233489 Number of (n+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards 1
 16928, 26851581, 325881917874, 30258000792128359, 21465796875243969838158, 116334766873906705110905737848, 4816818414167397900878136977065117439, 1523736584959855755536079832732491749466846054 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A233497 LINKS R. H. Hardin, Table of n, a(n) for n = 1..11 EXAMPLE Some solutions for n=1 ..2..1..2....0..1..1....2..2..2....1..0..2....1..2..2....2..1..2....2..0..0 ..2..0..0....0..2..2....0..0..2....2..1..0....0..0..1....2..0..2....1..0..0 ..2..1..1....1..0..0....0..1..1....0..1..1....0..0..2....0..1..1....2..2..0 CROSSREFS Sequence in context: A233497 A233498 A233490 * A205606 A205437 A235978 Adjacent sequences:  A233486 A233487 A233488 * A233490 A233491 A233492 KEYWORD nonn AUTHOR R. H. Hardin, Dec 11 2013 STATUS approved

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Last modified May 24 04:30 EDT 2022. Contains 354005 sequences. (Running on oeis4.)