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A207746 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically 1
2, 16, 102, 900, 8778, 104976, 1341606, 20115225, 316615970, 5707953601, 106646250804, 2244863934369, 48526426817904, 1167193108267264, 28644642089792472, 774480816028370889, 21267135535735987266 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207752

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..61

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207699 A207902 A267713 * A207248 A208033 A208159

Adjacent sequences:  A207743 A207744 A207745 * A207747 A207748 A207749

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 19 2012

STATUS

approved

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Last modified October 19 07:29 EDT 2021. Contains 348074 sequences. (Running on oeis4.)