A234244 Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).

790718, 23428586, 725628904, 22918035530, 726655747532, 23141164047392, 736603691141316, 23507963375000526, 749462059155365450, 23951460063621821168, 764584860814829968090, 24467051427944239943588

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..32

Example

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

Crossrefs

Column 4 of A234245.

Sequence in context: A104949 A237895 A187295 * A255762 A255755 A254844

Adjacent sequences: A234241 A234242 A234243 * A234245 A234246 A234247

Keyword

nonn

Author

R. H. Hardin, Dec 21 2013

Status

approved