login
A183825
1/256 the number of (n+1)X7 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor
0
759375, 6954559893, 62851591581012, 570213177028325955, 5167876666358771202411
OFFSET
1,1
COMMENTS
Column 6 of A183827
EXAMPLE
Some solutions with upper left block zero for 3X7
..0..0..2..0..0..0..3....0..0..0..0..1..0..0....0..0..0..0..1..0..2
..0..0..2..2..0..0..0....0..0..3..2..0..0..1....0..0..1..2..0..0..1
..2..0..1..0..1..0..0....2..0..1..0..2..0..2....1..0..3..0..3..0..0
CROSSREFS
Sequence in context: A172885 A306959 A137468 * A254074 A014889 A014888
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved