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A183318 Number of nX6 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
21, 119, 1109, 7833, 61755, 455509, 3437801, 25528515, 190243099, 1412491505, 10484413673, 77772795145, 576515430247, 4273815283079, 31666450138863, 234664439146089, 1738444321229885, 12880327740810545, 95414952005019587 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A183322

LINKS

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

FORMULA

Empirical: a(n)=a(n-1)+155*a(n-2)-83*a(n-3)-10499*a(n-4)+2739*a(n-5)+418493*a(n-6)-42935*a(n-7)-11114743*a(n-8)+187159*a(n-9)+210582515*a(n-10)+4942581*a(n-11)-2969847775*a(n-12)-106170955*a(n-13)+32076857369*a(n-14)+1009462397*a(n-15)-270649716999*a(n-16)-4937331775*a(n-17)+1809326210403*a(n-18)+1914644979*a(n-19)-9680756335999*a(n-20)+163670254649*a(n-21)+41751512005591*a(n-22)-1408662580253*a(n-23)-145837266421261*a(n-24)+7057415803719*a(n-25)+413726670171893*a(n-26)-24987326051091*a(n-27)-954307354257023*a(n-28)+66458580117683*a(n-29)+1789004571454345*a(n-30)-136365538707579*a(n-31)-2720716316400381*a(n-32)+218575487621235*a(n-33)+3345872171110277*a(n-34)-274993070105947*a(n-35)-3312136548981459*a(n-36)+271453232272799*a(n-37)+2623620146984753*a(n-38)-209286828757487*a(n-39)-1650724693067001*a(n-40)+124964898554049*a(n-41)+817527401509143*a(n-42)-57057707865601*a(n-43)-315201100152543*a(n-44)+19563658984353*a(n-45)+93322287344023*a(n-46)-4906758788153*a(n-47)-20850409285435*a(n-48)+864282086203*a(n-49)+3434976022529*a(n-50)-99411558905*a(n-51)-404036952399*a(n-52)+6269911051*a(n-53)+32355800903*a(n-54)-65276327*a(n-55)-1635520523*a(n-56)-16406321*a(n-57)+45651461*a(n-58)+790773*a(n-59)-534995*a(n-60)-5413*a(n-61)+1739*a(n-62)-a(n-63)-a(n-64)

EXAMPLE

Some solutions for 5X6

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

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

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

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

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

CROSSREFS

Sequence in context: A297316 A079417 A267877 * A204214 A074088 A245031

Adjacent sequences:  A183315 A183316 A183317 * A183319 A183320 A183321

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2011

STATUS

approved

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Last modified May 25 02:55 EDT 2022. Contains 354047 sequences. (Running on oeis4.)