A234167 Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).

764190, 8846884, 99877680, 1183467658, 13865878254, 171702282736, 2098023535022, 27538386579098, 353610525268640, 4972980047971518, 67334078721083922, 1018157155350964072, 14484963145641873482

Offset

1,1

Links

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

Example

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

Crossrefs

Column 6 of A234169.

Sequence in context: A043673 A233415 A122468 * A237573 A232123 A232421

Adjacent sequences: A234164 A234165 A234166 * A234168 A234169 A234170

Keyword

nonn

Author

R. H. Hardin, Dec 20 2013

Status

approved