A235256 Number of (n+1) X (6+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

161060, 382036, 878988, 2337832, 5990204, 17318888, 47995084, 147612912, 434010540, 1398866408, 4308115948, 14396788496, 46023868476, 158220825048, 521487674780, 1833631650976, 6198214908700, 22195113815928, 76626909673100

Offset

1,1

Comments

Column 6 of A235258.

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

Some solutions for n=1:
  3 0 3 1 4 2 7     6 2 4 1 5 0 6     1 4 2 6 4 5 4
  0 4 0 5 1 6 4     4 7 2 6 3 5 4     4 0 5 2 7 1 7

Crossrefs

Sequence in context: A017285 A017393 A017657 * A233891 A339498 A249880

Adjacent sequences: A235253 A235254 A235255 * A235257 A235258 A235259

Keyword

nonn

Author

R. H. Hardin, Jan 05 2014

Status

approved