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!)
A235816 Number of (n+1)X(2+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
2894, 87888, 2273170, 52510194, 1128547722, 22902973310, 445722551604, 8378893422154, 153271349524996, 2739947546255962, 48060566922825084, 829462448681057310, 14120165309292997170, 237536427227107162910 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235818

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..2..3..3....1..3..3....3..0..1....3..0..2....1..0..2....2..3..0....1..1..0

..0..1..2....1..1..2....1..1..1....0..2..0....1..1..0....3..3..1....0..3..0

..0..2..0....2..0..2....0..1..0....3..2..0....0..1..3....3..0..1....0..0..0

CROSSREFS

Sequence in context: A061663 A205051 A262418 * A235819 A235575 A281657

Adjacent sequences:  A235813 A235814 A235815 * A235817 A235818 A235819

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 27 07:01 EDT 2022. Contains 357052 sequences. (Running on oeis4.)