A197441 Number of nX7 0..2 arrays with no element equal to the average of its horizontal and vertical neighbors

400, 644328, 746250884, 811669674888, 903529041581340, 1002605692717130692, 1112998745351676081292, 1235511655153578238343970, 1371513250568819862402121642, 1522485346268679493501795851082

Offset

1,1

Comments

Column 7 of A197442

Links

R. H. Hardin, Table of n, a(n) for n = 1..11

Example

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

Crossrefs

Sequence in context: A151608 A022232 A151652 * A268366 A013767 A013895

Adjacent sequences: A197438 A197439 A197440 * A197442 A197443 A197444

Keyword

nonn

Author

R. H. Hardin Oct 15 2011

Status

approved