A199100 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 two or fewer horizontal or vertical neighbors

105, 113010, 40210161, 115707966228, 123022787797053, 46438726281827509

Offset

1,1

Comments

Column 7 of A199101

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A305146 A304644 A171116 * A225217 A096150 A068256

Adjacent sequences: A199097 A199098 A199099 * A199101 A199102 A199103

Keyword

nonn

Author

R. H. Hardin Nov 02 2011

Status

approved