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 A183783 Half the number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having sum 4 0
 31, 3552, 2214457, 7635071835, 144396520117972, 15033760617564577257, 8603578492435516321649249, 27081302315719663051228636805358 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A183792 LINKS EXAMPLE Some solutions for 3X3 ..0..2..2....2..2..2....0..0..0....0..1..1....2..0..0....1..0..0....0..2..1 ..2..2..1....2..2..2....0..0..0....0..2..1....2..2..0....2..2..0....1..2..2 ..1..1..1....0..1..1....1..1..1....2..2..1....0..2..2....1..0..0....1..2..0 CROSSREFS Sequence in context: A262926 A330398 A218661 * A072913 A001237 A289397 Adjacent sequences:  A183780 A183781 A183782 * A183784 A183785 A183786 KEYWORD nonn AUTHOR R. H. Hardin Jan 07 2011 STATUS approved

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Last modified September 27 07:28 EDT 2021. Contains 347673 sequences. (Running on oeis4.)