A234822 Number of (n+1) X (7+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant-stress 1 X 1 tilings).

493348, 828354, 1352816, 2794776, 5474032, 13185612, 29871848, 79958916, 202105408, 583797684, 1601458376, 4905768756, 14324879872, 46013484372

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Column 7 of A234823.

Sequence in context: A034629 A109914 A209856 * A082248 A166196 A237383

Adjacent sequences: A234819 A234820 A234821 * A234823 A234824 A234825

Keyword

nonn

Author

R. H. Hardin, Dec 31 2013

Status

approved