A234662 Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

68086, 286668, 1219652, 5359466, 23814574, 109044744, 504872642, 2403596054, 11568505044, 57131064334, 285141511326, 1457197306648, 7522255453522, 39677254579062, 211248846471052, 1146837458141038, 6278593907701038

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..98

Example

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

Crossrefs

Column 4 of A234665.

Sequence in context: A237807 A330414 A237389 * A250924 A206193 A209855

Adjacent sequences: A234659 A234660 A234661 * A234663 A234664 A234665

Keyword

nonn

Author

R. H. Hardin, Dec 29 2013

Status

approved