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A207523 Number of 7Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically 1
42, 1764, 12994, 101233, 991184, 7666319, 54373655, 406281454, 2956097240, 20771578816, 146736632823, 1035899791894, 7243867291833, 50585923578789, 353460807485988, 2464610891088612, 17167716757793554, 119597858516828559 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A207519

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A207922 A208702 A207471 * A207258 A207953 A207862

Adjacent sequences:  A207520 A207521 A207522 * A207524 A207525 A207526

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 18 2012

STATUS

approved

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Last modified December 6 06:14 EST 2021. Contains 349563 sequences. (Running on oeis4.)