A239160 Number of (7+1)X(n+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order

1639, 166531, 63961519, 18120156500, 5469574400477, 1628795409782566, 486439997897622259, 145186363056322713567, 43339017958528994310740, 12936602480737955657135546, 3861570524893536530703944116

Offset

1,1

Comments

Row 7 of A239155

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

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

Crossrefs

Sequence in context: A218010 A298075 A362405 * A206234 A158775 A234986

Adjacent sequences: A239157 A239158 A239159 * A239161 A239162 A239163

Keyword

nonn

Author

R. H. Hardin, Mar 11 2014

Status

approved