A234655 Number of (n+1) X (5+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

67840, 144512, 315024, 808160, 2113072, 6250544, 18735792, 61854032, 205847920, 742330832, 2685104304, 10406929040, 40243778032, 165309636944, 673859691312, 2898413109392, 12308156836720, 54881656146512, 240470725028784

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..37

Example

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

Crossrefs

Column 5 of A234658.

Sequence in context: A101697 A247221 A224655 * A104948 A237807 A330414

Adjacent sequences: A234652 A234653 A234654 * A234656 A234657 A234658

Keyword

nonn

Author

R. H. Hardin, Dec 29 2013

Status

approved