A221500 Majority value maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..3 3Xn array

1, 21, 228, 1733, 14297, 111042, 874106, 6765307, 52691160, 408808871, 3171542725, 24602720628, 190809097139, 1479787939455, 11475910286377, 88994984484326, 690147796546982, 5352001020952269, 41503963539351397, 321856665112343658

Offset

1,2

Comments

Row 3 of A221499

Links

R. H. Hardin, Table of n, a(n) for n = 1..208

Example

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

Crossrefs

Sequence in context: A332908 A027508 A221037 * A161518 A162360 A161899

Adjacent sequences: A221497 A221498 A221499 * A221501 A221502 A221503

Keyword

nonn

Author

R. H. Hardin Jan 18 2013

Status

approved