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A186823 Half the number of (n+2)X9 binary arrays with each 3X3 subblock having sum 4 or 5 0
1750896, 56422648, 1653336285, 52016332522, 1783799078413, 60308324623150, 2065963672906699, 72230087740874585 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A186825

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for 4X9 with a(1,1)=0

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

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

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

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

CROSSREFS

Sequence in context: A244073 A237307 A090054 * A095391 A234456 A251981

Adjacent sequences:  A186820 A186821 A186822 * A186824 A186825 A186826

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 27 2011

STATUS

approved

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Last modified June 26 04:17 EDT 2022. Contains 354874 sequences. (Running on oeis4.)