A234673 Number of (n+1) X (n+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).

112, 1152, 6328, 41832, 191128, 1092120, 4736536, 25287288, 108432472, 559144632, 2410981528

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Diagonal of A234681.

Sequence in context: A008430 A249004 A249469 * A232785 A232850 A233115

Adjacent sequences: A234670 A234671 A234672 * A234674 A234675 A234676

Keyword

nonn

Author

R. H. Hardin, Dec 29 2013

Status

approved