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A208838 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 0 vertically 2
26, 676, 2430, 9801, 49126, 272206, 1644265, 10399480, 67895010, 451450105, 3037317426, 20579585922, 140057351785, 955762122172, 6533166024022, 44704031815465, 306089086744206, 2096624267502790, 14364797790087081 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A208840

LINKS

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

FORMULA

Empirical: a(n) = 11*a(n-1) -17*a(n-2) -124*a(n-3) +276*a(n-4) +396*a(n-5) -902*a(n-6) -462*a(n-7) +946*a(n-8) +220*a(n-9) -340*a(n-10) -44*a(n-11) +39*a(n-12) +3*a(n-13) -a(n-14) for n>15

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A208067 A207932 A207849 * A208686 A207350 A207772

Adjacent sequences:  A208835 A208836 A208837 * A208839 A208840 A208841

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2012

STATUS

approved

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Last modified January 18 14:12 EST 2022. Contains 350455 sequences. (Running on oeis4.)