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A206877 Number of n X n 0..1 arrays avoiding 0 1 0 horizontally and 1 0 1 vertically 0
2, 16, 230, 6478, 472412, 87541530, 37121455086, 35861331864570, 81188767942820548, 433324879893854403222, 5417399373066905672590966, 158241198424834434935170407538, 10811858970416460513671922192330804 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A206883

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A188500 A188515 A152542 * A206995 A206779 A233288

Adjacent sequences:  A206874 A206875 A206876 * A206878 A206879 A206880

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 13 2012

STATUS

approved

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)