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!)
A186819 Half the number of (n+2)X5 binary arrays with each 3X3 subblock having sum 4 or 5 1
2904, 25808, 222632, 2009622, 18829218, 175882357, 1653336285, 15639380661, 147826932337, 1399067559974, 13257222778967, 125596828357521, 1190237476340344, 11282323553231805, 106939751216903914 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A186825

LINKS

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

EXAMPLE

Some solutions for 4X5 with a(1,1)=0

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

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

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

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

CROSSREFS

Sequence in context: A207533 A054828 A153412 * A247317 A236742 A254183

Adjacent sequences:  A186816 A186817 A186818 * A186820 A186821 A186822

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 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 January 28 03:06 EST 2020. Contains 331314 sequences. (Running on oeis4.)