A234332 Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

2188288, 100679584, 4858165384, 243143542208, 12196560180032, 617580751794644, 31177141022942176, 1583262145293167280, 80094346873171574312, 4074447863066273515576, 206421228259428804932280

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

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

Crossrefs

Column 7 of A234333.

Sequence in context: A224580 A224581 A224588 * A251342 A019289 A254803

Adjacent sequences: A234329 A234330 A234331 * A234333 A234334 A234335

Keyword

nonn

Author

R. H. Hardin, Dec 23 2013

Status

approved