A234446 Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

8064, 125080, 2053280, 34601928, 588663528, 10079824144, 172781443608, 2969800840496, 51008286679168, 877838573526604, 15089751678627080, 259871199831030144, 4469550891727670024, 77017044139316320812

Offset

1,1

Links

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

R. H. Hardin, Empirical recurrence of order 92

Formula

Empirical recurrence of order 92 (see link above).

Example

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

Crossrefs

Column 3 of A234450.

Sequence in context: A109486 A032780 A159224 * A318104 A013378 A013458

Adjacent sequences: A234443 A234444 A234445 * A234447 A234448 A234449

Keyword

nonn

Author

R. H. Hardin, Dec 26 2013

Status

approved