A185611 Number of (n+1)X3 0..2 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum

171, 2121, 24993, 313105, 3959747, 50512903, 646053371, 8287005157, 106415024441, 1368098434721, 17598078326551, 226486740265787, 2915699882756875, 37545244543350913, 483541481413780309

Offset

1,1

Comments

Column 2 of A185614

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 5X3
..0..2..0....0..2..0....0..0..0....0..2..1....0..0..2....0..2..1....0..2..0
..2..0..0....1..1..1....1..0..1....1..2..2....0..1..0....2..2..1....1..0..1
..2..0..2....1..2..1....1..1..1....0..2..1....0..0..2....1..0..2....2..2..2
..0..2..1....1..1..1....1..1..1....2..2..1....1..0..2....2..1..2....0..1..0
..1..2..0....0..1..0....0..0..0....1..1..2....0..0..2....1..0..2....2..0..2

Crossrefs

Sequence in context: A199902 A251223 A186868 * A195279 A370299 A016058

Adjacent sequences: A185608 A185609 A185610 * A185612 A185613 A185614

Keyword

nonn

Author

R. H. Hardin Jan 31 2011

Status

approved