A234909 Number of (n+1) X (5+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

395992, 5287952, 66054728, 1035687060, 15595734400, 268581208108, 4410133393168, 80151723302880, 1370941526247760, 25729462123401132, 449038140756511800, 8617212783826638192, 152081237998449308184

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..30

Example

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

Crossrefs

Column 5 of A234911.

Sequence in context: A131277 A250453 A233612 * A224633 A050434 A224630

Adjacent sequences: A234906 A234907 A234908 * A234910 A234911 A234912

Keyword

nonn

Author

R. H. Hardin, Jan 01 2014

Status

approved