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 A204505 Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..2 introduced in row major order 0
 652, 164248, 161927101, 299144720528, 2274909402099901 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A204511 LINKS EXAMPLE Some solutions for n=3 ..0..0..1..0..2....0..0..1..1..2....0..0..1..0..0....0..0..0..1..0 ..2..1..1..2..2....1..0..0..0..0....2..0..0..2..0....2..1..0..2..0 ..1..1..1..1..2....1..0..0..0..0....2..0..0..0..0....2..1..0..0..0 ..2..1..2..2..2....0..1..0..1..0....1..0..0..2..2....0..1..0..0..2 ..2..1..0..2..2....0..0..0..0..2....0..0..0..1..0....0..0..0..2..2 CROSSREFS Sequence in context: A204511 A204506 A282558 * A188414 A089673 A104823 Adjacent sequences:  A204502 A204503 A204504 * A204506 A204507 A204508 KEYWORD nonn AUTHOR R. H. Hardin Jan 15 2012 STATUS approved

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Last modified April 17 08:40 EDT 2021. Contains 343064 sequences. (Running on oeis4.)