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 A230700 Number of (n+3)X(n+3) 0..2 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero 0
 2, 28, 2106, 121382, 43853402, 13663471254, 26681634560690, 45145901233869558, 479398570293769095556, 4408105907275837627631446 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A230708 LINKS EXAMPLE Some solutions for n=2 ..0..x..2..x..2....0..x..0..x..1....0..x..2..x..2....0..x..0..x..1 ..x..1..x..0..x....x..1..x..2..x....x..1..x..0..x....x..1..x..2..x ..0..x..2..x..1....2..x..1..x..0....0..x..1..x..2....0..x..2..x..1 ..x..1..x..2..x....x..0..x..1..x....x..2..x..0..x....x..2..x..0..x ..0..x..0..x..1....2..x..2..x..0....1..x..1..x..2....1..x..1..x..2 CROSSREFS Sequence in context: A202942 A326366 A177400 * A168554 A152792 A085602 Adjacent sequences:  A230697 A230698 A230699 * A230701 A230702 A230703 KEYWORD nonn AUTHOR R. H. Hardin, Oct 28 2013 STATUS approved

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Last modified May 26 22:58 EDT 2020. Contains 334634 sequences. (Running on oeis4.)