A234711 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 (constant-stress 1 X 1 tilings).

6664130, 11903466, 21220178, 48741018, 110368418, 311077338, 850224914, 2760580074, 8598808130, 30865204506

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Column 7 of A234712.

Sequence in context: A344923 A204404 A266914 * A309385 A022237 A273753

Adjacent sequences: A234708 A234709 A234710 * A234712 A234713 A234714

Keyword

nonn

Author

R. H. Hardin, Dec 29 2013

Status

approved