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 A223119 Number of n X n 0..2 arrays with no more than floor(n X n/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order 0
 1, 10, 1154, 1780641, 12483535858, 1092037282618789, 408653905036011361072, 1924878822883438537017070318, 37532720906358968019501781345379199 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A223126 LINKS EXAMPLE Some solutions for n=3 ..0..1..0....0..1..2....0..1..0....0..1..0....0..1..0....0..1..2....0..1..2 ..2..0..1....1..1..0....0..2..2....2..0..1....2..2..2....0..1..1....0..0..1 ..2..0..0....0..1..2....1..0..1....2..2..1....1..2..0....2..1..2....1..0..1 CROSSREFS Sequence in context: A267595 A266621 A110731 * A233252 A249849 A027879 Adjacent sequences: A223116 A223117 A223118 * A223120 A223121 A223122 KEYWORD nonn AUTHOR R. H. Hardin Mar 15 2013 STATUS approved

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Last modified March 21 07:38 EDT 2023. Contains 361393 sequences. (Running on oeis4.)