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A186934 Number of (n+1)X5 binary arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces 1
144, 1664, 10496, 59720, 400192, 2504264, 16124472, 102475864, 654285152, 4168475512, 26600834384, 169634278408, 1082068348632, 6900437984584, 44011928616896, 280696997413664, 1790295379221024, 11418170020374768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A186939

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 4X5

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

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

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

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

CROSSREFS

Sequence in context: A209205 A223594 A223445 * A066445 A008431 A250084

Adjacent sequences:  A186931 A186932 A186933 * A186935 A186936 A186937

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2011

STATUS

approved

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Last modified January 29 05:04 EST 2022. Contains 350672 sequences. (Running on oeis4.)