A207316 Number of nX7 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal

1791, 3207681, 3908531208, 4606553380932, 5287481507599689, 6040603302358685420, 6886304943923084187412, 7846460408825171428954937, 8938860707121704653295995157, 10182853721047511421514027307629

Offset

1,1

Comments

Column 7 of A207317

Links

R. H. Hardin, Table of n, a(n) for n = 1..205

Example

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

Crossrefs

Sequence in context: A153837 A207555 A207549 * A206699 A249191 A234203

Adjacent sequences: A207313 A207314 A207315 * A207317 A207318 A207319

Keyword

nonn

Author

R. H. Hardin Feb 16 2012

Status

approved