A234172 Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

47936, 1173940, 31382488, 877700068, 25133134704, 729604466884, 21336968498856, 627009808429332, 18469535419340472, 545113896765577704, 16099953582167606184, 475972286878459170524, 14072893642290774269272

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Column 3 of A234175.

Sequence in context: A251455 A204402 A203929 * A236716 A234297 A043615

Adjacent sequences: A234169 A234170 A234171 * A234173 A234174 A234175

Keyword

nonn

Author

R. H. Hardin, Dec 20 2013

Status

approved