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A207922 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically 1
42, 1764, 12994, 101069, 628945, 4105063, 28188778, 187980955, 1245595210, 8342244698, 55794408879, 372138707621, 2485175186365, 16603501309984, 110873077840653, 740391497518318, 4944900311857882, 33024243581797845 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A207918

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A207660 A207452 A208554 * A208702 A207471 A207523

Adjacent sequences:  A207919 A207920 A207921 * A207923 A207924 A207925

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 21 2012

STATUS

approved

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Last modified September 18 11:20 EDT 2021. Contains 347518 sequences. (Running on oeis4.)