A186533 Number of (n+1)X7 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant

1448300, 471337960, 169733268904, 60763226187367, 21417901169134908

Offset

1,1

Comments

Column 6 of A186536

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X7
..0..0..1..0..2..0..2....0..0..1..0..2..2..1....0..0..1..0..0..1..2
..0..1..0..2..2..1..2....0..1..0..1..0..2..2....0..1..0..2..1..2..0
..1..0..1..1..1..0..2....1..0..1..0..1..0..0....1..0..1..1..0..0..1

Crossrefs

Sequence in context: A124490 A124491 A205892 * A224974 A254584 A254591

Adjacent sequences: A186530 A186531 A186532 * A186534 A186535 A186536

Keyword

nonn

Author

R. H. Hardin Feb 23 2011

Status

approved