A234493 Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).

13464, 158288, 1856768, 22124316, 260915944, 3122368992, 36940569778, 443886085700, 5267872223782, 63565110955752, 756696012118752, 9169781418833544, 109495524770067884, 1332679274592188150

Offset

1,1

Links

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

Example

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

Crossrefs

Column 3 of A234497.

Sequence in context: A284952 A250616 A115925 * A029557 A115922 A248444

Adjacent sequences: A234490 A234491 A234492 * A234494 A234495 A234496

Keyword

nonn

Author

R. H. Hardin, Dec 26 2013

Status

approved