A220320 Majority value maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and vertical neighbors in a random 0..3 nX3 array

4, 35, 243, 1887, 15189, 116448, 909903, 7061662, 54764410, 425003183, 3295808062, 25561278738, 198233289265, 1537281767263, 11921547738532, 92449984931302, 716936108446899, 5559728723273092, 43114791778783459, 334348143414517835

Offset

1,1

Comments

Column 3 of A220323

Links

R. H. Hardin, Table of n, a(n) for n = 1..100

Example

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

Crossrefs

Sequence in context: A354855 A128811 A220256 * A261186 A104526 A174436

Adjacent sequences: A220317 A220318 A220319 * A220321 A220322 A220323

Keyword

nonn

Author

R. H. Hardin Dec 10 2012

Status

approved