A234995 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, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

31944, 229228, 1843956, 19087908, 208674708, 2489486392, 30119101476, 376753198536, 4734900474112, 60585326899188, 778145896663160, 10118849072747616, 132122488737660308, 1741401808205233096

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..139

Example

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

Crossrefs

Column 4 of A234998.

Sequence in context: A237165 A134124 A203738 * A236587 A255079 A354079

Adjacent sequences: A234992 A234993 A234994 * A234996 A234997 A234998

Keyword

nonn

Author

R. H. Hardin, Jan 02 2014

Status

approved