A223125 Number of nX7 0..2 arrays with no more than floor(nX7/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

168, 212771, 186184618, 288571160526, 266413907612919, 431398785877769642, 408653905036011361072, 676042978091871167227096, 650052595352039506901487013, 1088984293616040434966698723941

Offset

1,1

Comments

Column 7 of A223126

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

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

Crossrefs

Sequence in context: A391700 A159394 A008699 * A003797 A297048 A003929

Adjacent sequences: A223122 A223123 A223124 * A223126 A223127 A223128

Keyword

nonn

Author

R. H. Hardin, Mar 15 2013

Status

approved