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A228388 Number of nX6 binary arrays with top left value 1 and no two ones adjacent horizontally or vertically. 1
8, 70, 963, 11449, 143072, 1755243, 21683149, 267157140, 3294926929, 40621769739, 500881862476, 6175719012200, 76146337618146, 938873253971283, 11576206633106083, 142733217148402101, 1759883977929944820 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A228390

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 8*a(n-1) +62*a(n-2) -78*a(n-3) -375*a(n-4) +300*a(n-5) +486*a(n-6) -385*a(n-7) -30*a(n-8) +52*a(n-9) -2*a(n-10) -a(n-11)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A053729 A266433 A267244 * A020532 A043086 A003364

Adjacent sequences:  A228385 A228386 A228387 * A228389 A228390 A228391

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 21 2013

STATUS

approved

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Last modified December 13 18:19 EST 2018. Contains 318086 sequences. (Running on oeis4.)