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A188991 Number of nX8 binary arrays without the pattern 0 0 1 antidiagonally or horizontally 1
88, 7744, 364088, 16035624, 669102268, 27666931400, 1139359314152, 46897992282392, 1930338232612032, 79452367353103728, 3270241701215854104, 134602347431894802032, 5540199508617476132752, 228033245642595584486776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A188992

LINKS

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

FORMULA

Empirical: a(n) = 56*a(n-1) -580*a(n-2) -2483*a(n-3) +53864*a(n-4) -142516*a(n-5) -861420*a(n-6) +6667480*a(n-7) -9042400*a(n-8) -26734896*a(n-9) -222171104*a(n-10) +1190322000*a(n-11) -634672960*a(n-12) -756388160*a(n-13) -7962248640*a(n-14) +16790951424*a(n-15) +70954240*a(n-16) -8696557312*a(n-17) -17592663040*a(n-18) +21510688768*a(n-19) -693170176*a(n-20) -31580160*a(n-21) -1455161344*a(n-22) -2287714304*a(n-23) +990117888*a(n-24) +65208320*a(n-25) -314834944*a(n-26) +58982400*a(n-27) for n>32

EXAMPLE

Some solutions for 3X8

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

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

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

CROSSREFS

Sequence in context: A189263 A189701 A188762 * A189201 A052069 A346926

Adjacent sequences:  A188988 A188989 A188990 * A188992 A188993 A188994

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 15 2011

STATUS

approved

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Last modified October 6 23:36 EDT 2022. Contains 357270 sequences. (Running on oeis4.)