A235075 Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

79848, 644188, 5686836, 55735596, 552618120, 5629225056, 57334595276, 593260934340, 6129703359580, 64276108512888, 672668603855416, 7148987959764848, 75769668771384436, 816248960318927192

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..89

Example

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

Crossrefs

Column 4 of A235078.

Sequence in context: A237172 A146324 A185473 * A229700 A112785 A106775

Adjacent sequences: A235072 A235073 A235074 * A235076 A235077 A235078

Keyword

nonn

Author

R. H. Hardin, Jan 03 2014

Status

approved