A230982 Number of white square subarrays of (n+1)X(n+1) binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with upper left element zero

1, 1, 11, 47, 685, 7357, 223270, 5447557, 367167586, 19728028907, 2960154980175, 351638142057035, 116764729695106769, 30699761856170182376, 22542682942448533813110, 13106281552221398203554555

Offset

1,3

Comments

Diagonal of A230989

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

Some solutions for n=6
..0..x..0..x..0..x..1....0..x..1..x..0..x..0....0..x..0..x..1..x..1
..x..1..x..1..x..0..x....x..1..x..0..x..1..x....x..1..x..0..x..0..x
..1..x..1..x..1..x..1....0..x..1..x..1..x..1....0..x..0..x..1..x..0
..x..0..x..0..x..0..x....x..0..x..1..x..0..x....x..1..x..1..x..1..x
..0..x..1..x..1..x..0....1..x..0..x..0..x..0....1..x..1..x..0..x..1
..x..1..x..0..x..1..x....x..0..x..1..x..1..x....x..0..x..0..x..0..x
..0..x..0..x..1..x..0....1..x..1..x..0..x..0....1..x..1..x..1..x..1

Crossrefs

Sequence in context: A138362 A191499 A072372 * A024530 A117066 A042984

Adjacent sequences: A230979 A230980 A230981 * A230983 A230984 A230985

Keyword

nonn

Author

R. H. Hardin, Nov 02 2013

Status

approved