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 A181020 Maximum number of 1s in an nX(n+1) binary matrix with no three 1s adjacent in a line along a row, column or diagonally 0
 2, 4, 7, 12, 17, 23, 30, 38, 47, 58 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Superdiagonal 1 of A181019 LINKS EXAMPLE Some solutions for 6X7 ..1..0..1..0..1..0..1....1..0..1..0..1..0..1....1..0..1..0..1..0..1 ..0..0..1..1..0..1..1....0..0..1..1..0..1..1....0..0..1..1..0..1..1 ..1..1..0..1..0..1..0....1..1..0..1..0..1..0....1..1..0..1..0..1..0 ..0..0..1..0..0..0..1....0..1..1..0..0..0..1....0..1..1..0..0..0..1 ..1..0..1..0..1..1..0....1..0..0..0..1..1..0....1..0..0..0..1..1..0 ..1..1..0..1..0..1..1....1..1..0..1..0..1..1....1..0..1..1..0..1..1 CROSSREFS Sequence in context: A266186 A306673 A335892 * A049631 A239955 A332744 Adjacent sequences:  A181017 A181018 A181019 * A181021 A181022 A181023 KEYWORD nonn AUTHOR R. H. Hardin Sep 30 2010 STATUS approved

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Last modified August 3 19:25 EDT 2020. Contains 336201 sequences. (Running on oeis4.)