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A207176 Number of n X n 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically 0
2, 16, 241, 11227, 1507355, 567046841, 600838995529, 1782395103048207, 14875073639322545780, 349568074576274459361253, 23097327995486146831078764702, 4291548218733300058236161251915163 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207182

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A156495 A203418 A207082 * A217812 A217813 A217814

Adjacent sequences:  A207173 A207174 A207175 * A207177 A207178 A207179

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 15 2012

STATUS

approved

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Last modified March 25 03:50 EDT 2019. Contains 321450 sequences. (Running on oeis4.)