A234441 Number of (n+1) X (6+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

23520, 324556, 4221580, 59991972, 790261148, 11533082488, 153582428536, 2303823299344, 30988558369076, 477592381790200, 6479933659900164, 102441388245104972, 1399574362250420144, 22641148929701524076

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Column 6 of A234443.

Sequence in context: A204074 A031847 A237528 * A253310 A253658 A253728

Adjacent sequences: A234438 A234439 A234440 * A234442 A234443 A234444

Keyword

nonn

Author

R. H. Hardin, Dec 26 2013

Status

approved