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A203107
Number of n X 7 binary arrays with every 1 immediately preceded by 0 0 to the left or above.
1
9, 81, 4314, 130886, 3058275, 86512536, 2482513429, 67503863246, 1856382696349, 51633511183958, 1427030810399597, 39387690638977285, 1089488148528198780, 30128638070023208442, 832728521178275562686, 23020941223065491588705
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OFFSET
1,1
COMMENTS
Column 7 of
A203108
.
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..0..0..1..0..0..0....0..0..0..1..0..0..0....0..0..0..0..0..0..1
..0..0..0..1..0..0..1....0..0..0..1..0..0..1....0..0..1..0..0..0..0
..0..0..1..0..1..1..0....1..0..1..0..0..0..1....1..1..0..1..1..0..0
CROSSREFS
Sequence in context:
A371640
A344402
A167723
*
A168493
A003302
A053915
Adjacent sequences:
A203104
A203105
A203106
*
A203108
A203109
A203110
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Dec 29 2011
STATUS
approved
