A199236 Number of nX7 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 at least one horizontal or vertical neighbor

3, 1183, 157598, 198168342, 88764401434

Offset

1,1

Comments

Column 7 of A199237

Links

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

Example

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

Crossrefs

Sequence in context: A096082 A274994 A178195 * A171360 A034315 A172924

Adjacent sequences: A199233 A199234 A199235 * A199237 A199238 A199239

Keyword

nonn

Author

R. H. Hardin Nov 04 2011

Status

approved