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A207934 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically 0
2, 16, 98, 643, 5594, 58602, 737575, 10609482, 171524786, 3063622641, 59875563176, 1270299719270, 29076260441101, 714274071132328, 18746674985446278, 523589036696879095, 15507197067809135806, 485494086155807224584 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207938

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207301 A207105 A207387 * A207780 A207461 A207515

Adjacent sequences:  A207931 A207932 A207933 * A207935 A207936 A207937

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 21 2012

STATUS

approved

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Last modified January 22 16:44 EST 2022. Contains 350484 sequences. (Running on oeis4.)