A222648 Number of nX7 0..2 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order

17, 430, 5625, 317655, 5969486, 368332772, 8520024036, 648782020938, 17328016063058, 1457682246017845, 41488753505593111, 3633393326638123182, 105717575729773013067, 9379982461411242670482, 274913106384505454818011

Offset

1,1

Comments

Column 7 of A222649

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

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

Crossrefs

Sequence in context: A027404 A053114 A221443 * A167474 A158063 A370543

Adjacent sequences: A222645 A222646 A222647 * A222649 A222650 A222651

Keyword

nonn

Author

R. H. Hardin Feb 27 2013

Status

approved