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A208415 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 1 vertically 1
2, 16, 102, 1269, 18395, 365094, 8948825, 295643872, 11569038318, 627185978622, 39743547264799, 3541122637275087, 367535911624122068, 55280614681310159979, 9428817551220326025746, 2476044134980962346444356 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A208420

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..22

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207955 A207494 A207117 * A207945 A207853 A208022

Adjacent sequences:  A208412 A208413 A208414 * A208416 A208417 A208418

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2012

STATUS

approved

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Last modified September 27 15:44 EDT 2021. Contains 347691 sequences. (Running on oeis4.)