A234682 Number of (n+1) X (n+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).

232, 4416, 49480, 531984, 4224328, 37361280, 265716040, 2168371104

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Diagonal of A234690.

Sequence in context: A366816 A238919 A327831 * A156391 A279660 A188401

Adjacent sequences: A234679 A234680 A234681 * A234683 A234684 A234685

Keyword

nonn

Author

R. H. Hardin, Dec 29 2013

Status

approved