A231942 Number of 3Xn 0..3 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors

64, 318, 8426, 206808, 4736026, 94464137, 1919281092, 41278336185, 897740885078, 19169895279256, 405027273733561, 8590742778707213, 183219148883189294, 3908854794384722672, 83220827197605442257, 1770396034339882044148

Offset

1,1

Comments

Row 3 of A231940

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..0..1..1....0..0..1..1....0..0..0..3....0..2..0..1....0..0..1..1
..0..0..2..1....0..1..2..2....0..2..0..0....0..0..2..0....3..3..0..0
..1..0..0..2....0..0..1..2....1..0..1..2....2..0..0..1....0..0..0..2

Crossrefs

Sequence in context: A372093 A251196 A221486 * A221686 A211258 A252080

Adjacent sequences: A231939 A231940 A231941 * A231943 A231944 A231945

Keyword

nonn

Author

R. H. Hardin, Nov 15 2013

Status

approved