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!)
A236729 Number of (n+1)X(n+1) 0..2 arrays with the upper median minus the lower median of every 2X2 subblock equal 0
81, 2471, 203517, 55635639, 48557573047, 149399847864279, 1491726036815254275, 48504233592897621172359 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A236737

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=2

..0..0..0....1..2..0....1..0..2....1..2..1....0..1..1....0..0..0....2..2..1

..1..0..2....0..1..1....0..1..2....0..2..1....2..2..2....2..1..1....1..0..2

..2..1..1....1..1..0....2..0..2....2..1..2....0..1..1....1..2..2....0..1..0

CROSSREFS

Sequence in context: A123219 A205512 A297606 * A236147 A237473 A282995

Adjacent sequences:  A236726 A236727 A236728 * A236730 A236731 A236732

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2014

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 September 25 15:31 EDT 2020. Contains 337344 sequences. (Running on oeis4.)