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A208694 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 0 and 1 0 1 vertically 0
2, 16, 98, 1309, 30160, 1415508, 126827983, 22125222702, 7392844742356, 4723174261254577, 5746602867110840996, 13284653021118899451246, 58277226038377671962460367, 484690813727478247761183804458 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A208698

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207461 A207515 A207913 * A319603 A043016 A197202

Adjacent sequences:  A208691 A208692 A208693 * A208695 A208696 A208697

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2012

STATUS

approved

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Last modified January 28 22:57 EST 2022. Contains 350669 sequences. (Running on oeis4.)