A230692 Number of (n+2)X(3+2) 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least two elements with value (x(i,j)+1) mod 3, and upper left element zero

21, 144, 9430, 442490, 18880359, 845419469, 37380126077, 1652305192566, 73119827289165, 3234539964921524, 143088660860878306, 6330053685562920899, 280030245168413301473, 12388059947078673447146, 548026781823813712246076

Offset

1,1

Comments

Column 3 of A230694

Links

R. H. Hardin, Table of n, a(n) for n = 1..183

Example

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

Crossrefs

Sequence in context: A221785 A301866 A101645 * A267992 A060493 A198183

Adjacent sequences: A230689 A230690 A230691 * A230693 A230694 A230695

Keyword

nonn

Author

R. H. Hardin, Oct 27 2013

Status

approved