login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A205587
Number of (n+1)X6 0..2 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..2 introduced in row major order
4
12574, 248940, 6127845, 147377704, 3619876639, 88339585116, 2185708696857, 53385992474116, 1322383286558544, 32335854186137718, 800647385900917353, 19592761418771490008, 484877507851310339810, 11872137202509501621294
OFFSET
1,1
COMMENTS
Column 5 of A205590
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..2..2..1....0..1..0..2..1..1....0..0..1..2..0..0....0..1..0..1..0..0
..0..0..1..0..2..0....1..1..2..2..0..0....1..0..2..0..0..0....2..1..1..2..2..0
..2..1..0..0..1..2....0..2..0..1..2..1....1..2..0..0..0..2....1..0..2..2..2..1
..1..2..0..0..1..0....2..1..0..0..0..2....2..1..0..0..1..2....2..2..0..1..1..2
..0..0..2..0..2..1....0..0..1..2..0..1....2..0..1..1..2..2....1..2..1..0..2..2
CROSSREFS
Sequence in context: A237907 A251296 A205757 * A235103 A216990 A237086
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2012
STATUS
approved