A234889 Number of (n+1) X (7+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

98696, 551048, 2734000, 20512760, 138216800, 1249781316, 9589218960, 97684673000, 792839750040, 8760287132596, 72998710382504, 853176368587936, 7205405503541632, 87498882416514432, 744363442815523768

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

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

Crossrefs

Column 7 of A234890.

Sequence in context: A305697 A305698 A052090 * A163679 A106776 A238296

Adjacent sequences: A234886 A234887 A234888 * A234890 A234891 A234892

Keyword

nonn

Author

R. H. Hardin, Jan 01 2014

Status

approved