A231695 Number of nX3 0..3 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors

16, 272, 5972, 115583, 2049855, 37872601, 711067486, 13223846355, 245394073602, 4563802124823, 84893857186798, 1578413939501222, 29347570955255809, 545714251340861077, 10147343140331608494, 188682437852956208517

Offset

1,1

Comments

Column 3 of A231700

Links

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

Example

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

Crossrefs

Sequence in context: A002303 A158610 A221176 * A363754 A004382 A204955

Adjacent sequences: A231692 A231693 A231694 * A231696 A231697 A231698

Keyword

nonn

Author

R. H. Hardin, Nov 12 2013

Status

approved