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A183320 Number of nX8 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it 1
55, 523, 9767, 125103, 1872913, 25528515, 360327392, 4963103592, 68795107993, 947461430557, 13049865962515, 179449989707905, 2465460224449227, 33861928082629563, 464723391441659251, 6377980328407833025 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A183322

LINKS

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

EXAMPLE

Some solutions for 5X8

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

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

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

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

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

CROSSREFS

Sequence in context: A241699 A262103 A138053 * A185028 A222797 A180326

Adjacent sequences:  A183317 A183318 A183319 * A183321 A183322 A183323

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2011

STATUS

approved

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Last modified June 26 01:42 EDT 2022. Contains 354870 sequences. (Running on oeis4.)