A234173 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 1 (constant-stress 1 X 1 tilings).

517104, 20235390, 877700068, 40217750640, 1898311922200, 91205700777916, 4425866604068816, 216182302672158584, 10596237458369398636, 520784237104391176680, 25625311461818632717448, 1262549904811344180417180

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..56

Example

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

Crossrefs

Column 4 of A234175.

Sequence in context: A255041 A255034 A256952 * A226287 A251834 A157803

Adjacent sequences: A234170 A234171 A234172 * A234174 A234175 A234176

Keyword

nonn

Author

R. H. Hardin, Dec 20 2013

Status

approved