A231517 - OEIS

A231517

Number of n X n 0..1 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

2, 10, 153, 7697, 1031105, 451200772, 697702378939, 3293112511839389, 46764849359077493872, 2109508899293218313962632

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Diagonal of A231523.

LINKS

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 10 2013

STATUS

approved