A235247 Number of (n+1) X (7+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

1195458, 2282514, 4596034, 11626526, 29462346, 85432998, 243061138, 751070550, 2271413066, 7286424566, 22888634210

Offset

1,1

Comments

Column 7 of A235248.

Links

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

Example

Some solutions for n=1:
  0 2 0 7 0 5 1 3     2 6 3 7 3 6 3 5     0 4 0 5 3 2 1 6
  4 0 4 5 4 3 5 1     6 4 7 5 7 4 7 3     4 2 4 3 7 0 5 4

Crossrefs

Sequence in context: A376304 A247830 A151560 * A112129 A102336 A234479

Adjacent sequences: A235244 A235245 A235246 * A235248 A235249 A235250

Keyword

nonn

Author

R. H. Hardin, Jan 05 2014

Status

approved