login
A207776
Number of 6Xn 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 0 vertically
1
21, 441, 972, 7164, 43264, 195160, 1246206, 7381202, 35627804, 220514498, 1274712127, 6417933773, 38976638418, 221650017452, 1149943284883, 6878942092623, 38712906007620, 205352839927648, 1212860472464769
OFFSET
1,1
COMMENTS
Row 6 of A207774
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..1....0..1..1..0....0..1..0..1....0..0..1..0....1..0..0..1
..1..1..0..0....1..1..0..0....1..0..0..1....1..0..1..0....1..1..0..1
..1..1..0..0....1..1..0..0....1..1..0..1....1..0..1..0....1..1..0..0
..0..1..0..0....0..1..0..0....1..1..0..1....0..0..1..0....0..1..0..1
..0..1..0..0....1..1..0..0....1..1..0..1....0..0..1..0....1..0..0..1
..0..1..0..0....1..1..0..0....0..1..0..0....0..0..1..0....1..0..0..1
CROSSREFS
Sequence in context: A218840 A171326 A092499 * A207273 A207766 A207733
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 20 2012
STATUS
approved