A220392 Majority value maps: number of 7Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 7Xn array.

1, 1897, 127037, 7003040, 651568437, 53692543412, 4230913273170, 341309501692808

Offset

1,2

Comments

Row 7 of A220386

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A218848 A219427 A297320 * A219416 A221041 A221504

Adjacent sequences: A220389 A220390 A220391 * A220393 A220394 A220395

Keyword

nonn

Author

R. H. Hardin, Dec 13 2012

Status

approved