A199243 Number of nX5 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or two horizontal or vertical neighbors

6, 36, 110, 2907, 29227, 106134, 3190670, 34188947, 128653588, 4104988637, 45715625760, 175247135865, 5792733542191, 65791526001202, 255708129900506, 8623880506094423

Offset

1,1

Comments

Column 5 of A199246

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

Sequence in context: A270205 A207443 A207437 * A172137 A061804 A207421

Adjacent sequences: A199240 A199241 A199242 * A199244 A199245 A199246

Keyword

nonn

Author

R. H. Hardin Nov 04 2011

Status

approved