login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188306 Number of (n+1)X5 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums 1
160, 3036, 30096, 321696, 3415196, 37040856, 396560236, 4280848766, 45974525280, 495422640310, 5328080437862, 57374376030330, 617348839225218, 6645962770531796, 71524119538407004, 769894519113954114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A188311

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..196

EXAMPLE

Some solutions for 3X5

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

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

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

CROSSREFS

Sequence in context: A013448 A234650 A214354 * A189351 A168527 A185492

Adjacent sequences:  A188303 A188304 A188305 * A188307 A188308 A188309

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 12 04:27 EDT 2021. Contains 343810 sequences. (Running on oeis4.)