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A208495 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically 1
2, 16, 60, 324, 1794, 12654, 111328, 1037300, 13597800, 200667632, 3402101520, 81763293780, 1957289927740, 66305181080964, 2590637896086730, 114679284980561840, 7286860676676341916, 454949245195033857996 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A208501

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..32

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A170991 A209219 A207688 * A207583 A152665 A183762

Adjacent sequences:  A208492 A208493 A208494 * A208496 A208497 A208498

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 27 2012

STATUS

approved

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Last modified October 18 08:58 EDT 2021. Contains 348067 sequences. (Running on oeis4.)