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 A205238 Number of (n+1)X(n+1) 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors 0
 81, 4158, 515162, 144087952, 96890744524, 145542216126349, 555164681243665142 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A205246 LINKS Table of n, a(n) for n=1..7. EXAMPLE Some solutions for n=4 ..2..0..2..1..0....1..0..0..2..0....0..1..2..1..0....2..1..2..2..0 ..0..0..1..0..2....0..2..0..2..1....1..1..1..0..1....0..0..2..0..2 ..0..2..2..1..2....1..2..0..0..0....0..1..1..1..2....1..1..2..1..2 ..0..0..0..1..2....1..2..2..1..2....2..2..1..1..0....0..1..2..0..1 ..1..1..0..1..0....1..1..0..1..2....2..1..2..0..0....0..1..0..1..2 CROSSREFS Sequence in context: A237100 A245665 A016888 * A006312 A183962 A174698 Adjacent sequences: A205235 A205236 A205237 * A205239 A205240 A205241 KEYWORD nonn AUTHOR R. H. Hardin Jan 24 2012 STATUS approved

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Last modified May 28 01:34 EDT 2024. Contains 372900 sequences. (Running on oeis4.)