login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188309 Number of (n+1)X8 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums 0
3616, 348728, 10660334, 396560236, 14070003616, 520845610752 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A188311

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X8

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

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

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

CROSSREFS

Sequence in context: A107538 A270260 A106433 * A185495 A029829 A187745

Adjacent sequences:  A188306 A188307 A188308 * A188310 A188311 A188312

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 19 11:21 EDT 2022. Contains 353833 sequences. (Running on oeis4.)