A235174 Number of (n+1) X (6+1) 0..7 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).

1603344, 7533616, 35209872, 166600788, 790073988, 3773616876, 18074063004, 87109748012, 420922099064, 2045869493268, 9967014218496, 48826742512152

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=1:
  0 6 3 1 0 3 1       6 4 2 7 5 2 5       6 0 2 0 7 4 7
  2 4 5 7 2 1 3       4 6 0 1 3 4 3       4 2 0 2 5 6 5

Crossrefs

Column 6 of A235175.

Sequence in context: A104827 A198171 A220467 * A234410 A069374 A294776

Adjacent sequences: A235171 A235172 A235173 * A235175 A235176 A235177

Keyword

nonn

Author

R. H. Hardin, Jan 04 2014

Status

approved