login
A183320
Number of nX8 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it
1
55, 523, 9767, 125103, 1872913, 25528515, 360327392, 4963103592, 68795107993, 947461430557, 13049865962515, 179449989707905, 2465460224449227, 33861928082629563, 464723391441659251, 6377980328407833025
OFFSET
1,1
COMMENTS
Column 8 of A183322
LINKS
EXAMPLE
Some solutions for 5X8
..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..0..0..0..0..0..1..1..1....0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0
..1..1..0..0..0..1..1..1....0..1..1..0..0..0..1..1....0..0..0..0..0..0..0..1
..1..1..1..1..1..1..0..1....0..1..1..0..0..1..1..0....0..0..0..1..1..0..1..1
..1..1..1..1..1..1..1..1....0..1..1..1..1..1..1..1....0..1..1..1..1..1..1..0
CROSSREFS
Sequence in context: A241699 A262103 A138053 * A185028 A222797 A180326
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2011
STATUS
approved