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A183317 Number of nX5 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
13, 57, 377, 1975, 11385, 61755, 343035, 1872913, 10288475, 56225061, 307755285, 1681755047, 9194060283, 50235380141, 274514218163, 1499800424044, 8194423899045, 44768307376625, 244584423489933, 1336207363455509 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A183322

LINKS

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

FORMULA

Empirical: a(n)=a(n-1)+61*a(n-2)-29*a(n-3)-1491*a(n-4)+297*a(n-5)+19701*a(n-6)-1185*a(n-7)-159127*a(n-8)-819*a(n-9)+836109*a(n-10)+27171*a(n-11)-2951431*a(n-12)-125221*a(n-13)+7095801*a(n-14)+329665*a(n-15)-11617381*a(n-16)-586437*a(n-17)+12793417*a(n-18)+723297*a(n-19)-9246383*a(n-20)-590475*a(n-21)+4223841*a(n-22)+294743*a(n-23)-1155939*a(n-24)-81687*a(n-25)+173913*a(n-26)+10715*a(n-27)-12215*a(n-28)-423*a(n-29)+281*a(n-30)-a(n-31)-a(n-32)

EXAMPLE

Some solutions for 5X5

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

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

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

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

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

CROSSREFS

Sequence in context: A147011 A147019 A230988 * A055833 A103220 A086221

Adjacent sequences:  A183314 A183315 A183316 * A183318 A183319 A183320

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2011

STATUS

approved

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Last modified June 26 16:10 EDT 2022. Contains 354885 sequences. (Running on oeis4.)