A203107 - OEIS

A203107

Number of n X 7 binary arrays with every 1 immediately preceded by 0 0 to the left or above.

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