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A208159 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically 1
2, 16, 102, 981, 14446, 297702, 9072707, 424153857, 29316311612, 3025550427476, 473181884230845, 111694857841157921, 39694965205591894619, 21331992417577197285058, 17352141355803100139646251 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A208164

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207746 A207248 A208033 * A208282 A207236 A207955

Adjacent sequences:  A208156 A208157 A208158 * A208160 A208161 A208162

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 24 2012

STATUS

approved

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Last modified October 19 16:25 EDT 2021. Contains 348091 sequences. (Running on oeis4.)