A234188 Number of (n+1) X (4+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).

307598, 6788640, 153306026, 3523122268, 80718738808, 1866058872810, 42943618264812, 996725094813118, 23023676006094958, 536564105183552532, 12441805111891451908, 291213198731635585874, 6779802798011996820116

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..67

Example

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

Crossrefs

Column 4 of A234190.

Sequence in context: A116888 A270764 A236818 * A226364 A359846 A206276

Adjacent sequences: A234185 A234186 A234187 * A234189 A234190 A234191

Keyword

nonn

Author

R. H. Hardin, Dec 20 2013

Status

approved