A235172 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 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

49464, 250708, 1264228, 6419300, 32642908, 166600788, 851849276, 4369637236, 22453582476, 115730224136, 597466831456, 3093443358060, 16040915831000, 83411062046800, 434345297621000, 2267796795419484, 11856418582385728

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..98

Example

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

Crossrefs

Column 4 of A235175.

Sequence in context: A185921 A251912 A251910 * A251026 A210351 A234563

Adjacent sequences: A235169 A235170 A235171 * A235173 A235174 A235175

Keyword

nonn

Author

R. H. Hardin, Jan 04 2014

Status

approved