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A184759 Half the number of nX7 binary arrays with no 1 having an adjacent 1 both above and to its left 1
64, 4021, 287802, 20148584, 1415755252, 99419347147, 6982256142285, 490358739919898, 34437619490245450, 2418533807739519677, 169852219543126318591, 11928622276532341733243, 837740183488415335215180 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A184761

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 3X7

..0..1..0..1..0..1..0....0..0..1..0..0..1..1....0..1..0..1..1..0..0

..0..0..1..0..1..0..0....0..0..0..1..1..0..0....0..1..0..0..1..0..0

..0..1..0..0..1..0..1....1..0..0..0..1..1..0....0..0..0..0..0..1..1

CROSSREFS

Sequence in context: A228984 A222385 A208268 * A324491 A107627 A017571

Adjacent sequences:  A184756 A184757 A184758 * A184760 A184761 A184762

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 21 2011

STATUS

approved

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Last modified September 21 13:37 EDT 2019. Contains 327253 sequences. (Running on oeis4.)