A235067 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 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

22576, 125196, 727376, 4548100, 28470232, 181669172, 1158928396, 7478244692, 48319836696, 315434737336, 2063833870156, 13644687152612, 90442977075608, 606077571449384, 4071641959314636, 27668777784987580, 188421295433503328

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..164

Example

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

Crossrefs

Column 4 of A235071.

Sequence in context: A334532 A249614 A153770 * A233856 A100420 A271444

Adjacent sequences: A235064 A235065 A235066 * A235068 A235069 A235070

Keyword

nonn

Author

R. H. Hardin, Jan 03 2014

Status

approved