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 A183815 1/81 the number of (n+1)X5 0..2 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 0
 512, 65640, 8231592, 1042063656, 131467169720, 16607782066704, 2096961683069192, 264820293988996048, 33441129238755694072, 4223013161022170839808, 533285078101618075961512 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A183819 LINKS EXAMPLE Some solutions with upper left block zero for 3X5 ..0..0..2..0..2....0..0..1..1..2....0..0..1..2..0....0..0..2..2..2 ..0..0..2..2..1....0..0..2..1..2....0..0..1..2..1....0..0..2..1..1 ..0..1..1..2..0....0..2..0..0..1....2..1..1..1..2....0..1..1..0..0 CROSSREFS Sequence in context: A035753 A107549 A186797 * A013701 A187461 A291461 Adjacent sequences:  A183812 A183813 A183814 * A183816 A183817 A183818 KEYWORD nonn AUTHOR R. H. Hardin Jan 07 2011 STATUS approved

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Last modified October 19 13:01 EDT 2019. Contains 328222 sequences. (Running on oeis4.)