A187422 Number of (n+1)X5 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.

3593, 44512, 602024, 10014852, 139898890, 2183222530, 33876667824, 532183243177, 8196134675647, 127027583294006, 1971647634788057, 30657997754787486, 475925414500334404, 7389192788201124449

Offset

1,1

Comments

Column 4 of A187425

Links

R. H. Hardin, Table of n, a(n) for n = 1..57

Example

Some solutions for 3X5
..0..0..2..2..2....0..1..2..1..1....0..2..1..2..2....0..2..1..2..1
..1..1..1..0..0....2..1..0..0..0....1..2..0..0..0....1..2..0..2..2
..0..0..1..1..1....0..1..2..2..2....0..2..1..1..0....0..2..1..1..0

Crossrefs

Sequence in context: A284970 A183007 A251087 * A186214 A188100 A230023

Adjacent sequences: A187419 A187420 A187421 * A187423 A187424 A187425

Keyword

nonn

Author

R. H. Hardin, Mar 09 2011

Status

approved