A234990 Number of (n+1) X (7+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

762002, 5628414, 58209538, 951853990, 18608169852, 433293595046, 10857686727324, 292379412946254, 8126291847950614, 233115099695210828, 6783985484057006378, 200298891324445897770, 5954479568379696254384

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

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

Crossrefs

Column 7 of A234991.

Sequence in context: A254074 A014889 A014888 * A043673 A233415 A122468

Adjacent sequences: A234987 A234988 A234989 * A234991 A234992 A234993

Keyword

nonn

Author

R. H. Hardin, Jan 02 2014

Status

approved