login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A184458 Half the number of (n+1)X(n+1) binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks 0
3, 35, 3090, 1181303, 1925704384, 13061240432092, 364710845961492808, 41619801566809753837565, 19314484317434151178477352552 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A184467

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for 3X3

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

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

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

...

...E..M.......E..E.......M..M.......E..E.......M..P.......E..P.......E..E...

...P..E.......E..E.......P..P.......E..E.......E..E.......E..M.......E..E...

CROSSREFS

Sequence in context: A068726 A263512 A093583 * A132940 A132941 A068002

Adjacent sequences:  A184455 A184456 A184457 * A184459 A184460 A184461

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 15 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 4 21:09 EST 2016. Contains 278755 sequences.