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A186937 Number of (n+1)X8 binary arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces 1
2688, 108128, 1152312, 16124472, 199197496, 2731872328, 35582947920, 475637108896, 6259259510232, 83202139545720, 1098854338919104, 14592496893162664, 192979665562053704, 2559688265009129904 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A186939

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..94

EXAMPLE

Some solutions for 4X8

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

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

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

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

CROSSREFS

Sequence in context: A350184 A186833 A229682 * A185748 A252404 A020424

Adjacent sequences:  A186934 A186935 A186936 * A186938 A186939 A186940

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2011

STATUS

approved

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Last modified January 28 05:27 EST 2022. Contains 350654 sequences. (Running on oeis4.)