A235103 Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

12578, 35354, 101464, 304746, 937034, 2978124, 9680994, 32349918, 110399304, 385970050, 1376013714, 5011652964, 18582312010, 70201181566, 269458590752, 1050901159562, 4154691374234, 16642155164228, 67410127701802

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..208

Example

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

Crossrefs

Column 4 of A235107.

Sequence in context: A251296 A205757 A205587 * A216990 A237086 A190109

Adjacent sequences: A235100 A235101 A235102 * A235104 A235105 A235106

Keyword

nonn

Author

R. H. Hardin, Jan 03 2014

Status

approved