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A207595 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically 1
2, 16, 90, 441, 3915, 42025, 292600, 1982464, 21925800, 268730449, 2281109103, 19215781641, 242188032450, 3266593546384, 32361595709850, 320442399819025, 4434278073813775, 64468102969055809, 723471023371037040 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207599

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..64

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A069440 A000431 A281982 * A253487 A207019 A207164

Adjacent sequences:  A207592 A207593 A207594 * A207596 A207597 A207598

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 19 2012

STATUS

approved

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Last modified October 25 03:28 EDT 2021. Contains 348237 sequences. (Running on oeis4.)