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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

Table of n, a(n) for n=1..10.

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.)