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A181022 Maximum number of 1s in an nX(n+3) binary matrix with no three 1s adjacent in a line along a row, column or diagonally. 0
3, 8, 10, 16, 24, 29, 37, 48, 56 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for 6X9

..0..1..1..0..1..0..1..0..1....0..1..1..0..1..0..1..1..0

..1..1..0..0..1..1..0..1..1....1..0..1..1..0..1..1..0..1

..0..0..1..1..0..1..0..1..0....1..1..0..0..0..0..0..1..1

..1..0..0..0..1..0..0..0..1....0..0..0..0..1..1..0..0..0

..0..1..1..0..1..0..1..1..0....1..0..1..1..0..1..0..1..1

..1..1..0..1..0..1..0..1..1....1..1..0..1..1..0..0..1..1

CROSSREFS

Superdiagonal 3 of A181019.

Sequence in context: A022801 A128699 A104816 * A185870 A341938 A341939

Adjacent sequences:  A181019 A181020 A181021 * A181023 A181024 A181025

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Sep 30 2010

STATUS

approved

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Last modified June 15 19:31 EDT 2021. Contains 345049 sequences. (Running on oeis4.)