A234908 Number of (n+1) X (4+1) 0..7 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).

65048, 692608, 7067096, 87088300, 1035687060, 13775604012, 175004599884, 2424540636888, 31723187334888, 449888252601960, 5970366769567980, 86025115239391572, 1150587072601597108, 16789707566545824404

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..103

Example

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

Crossrefs

Column 4 of A234911.

Sequence in context: A198779 A104939 A183975 * A204640 A015344 A184148

Adjacent sequences: A234905 A234906 A234907 * A234909 A234910 A234911

Keyword

nonn

Author

R. H. Hardin, Jan 01 2014

Status

approved