A220380 Majority value maps: number of n X n binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 n X n array.

1, 7, 136, 7462, 1829169, 1509240923, 4230913273170

Offset

1,2

Comments

Diagonal of A220386

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=3
..1..0..0....1..1..1....1..1..1....0..0..1....1..0..0....1..0..1....1..1..1
..0..0..1....0..1..1....0..1..1....1..0..1....0..0..0....1..1..0....1..0..0
..1..1..0....1..0..1....0..0..0....1..1..1....1..1..1....1..1..1....1..1..1

Crossrefs

Sequence in context: A210028 A243684 A260535 * A051504 A058881 A100520

Adjacent sequences: A220377 A220378 A220379 * A220381 A220382 A220383

Keyword

nonn

Author

R. H. Hardin, Dec 13 2012

Status

approved