A198451 Number of 2nX10 0..2 arrays with values 0..2 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors

2763, 146187, 7302285, 396482929, 22496409154

Offset

1,1

Comments

Column 5 of A198452

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A014487 A260978 A043665 * A205288 A205896 A205418

Adjacent sequences: A198448 A198449 A198450 * A198452 A198453 A198454

Keyword

nonn

Author

R. H. Hardin Oct 25 2011

Status

approved