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!)
A235826 Number of (3+1)X(n+1) 0..3 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
29902, 2571976, 207321076, 14451129835, 941802350503, 56662350372800, 3224541434122084, 174047224603038838, 8999334817862358942, 447758527229610262781, 21553702930893564231178, 1007545823854417007565664 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A235824

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..102

EXAMPLE

Some solutions for n=1

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

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

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

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

CROSSREFS

Sequence in context: A251681 A183852 A274358 * A235823 A235581 A224612

Adjacent sequences:  A235823 A235824 A235825 * A235827 A235828 A235829

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 30 17:27 EDT 2022. Contains 357106 sequences. (Running on oeis4.)