login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A236140 Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock 1
2976, 79260, 2113860, 56388240, 1503850638, 40110759152, 1069867016024, 28536871273336, 761125924608458, 20300768006274458, 541469807189678490, 14442309765297348684, 385207864338207023016, 10274348880475607720026 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A236142

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A272285 A124595 A186549 * A281330 A289455 A202775

Adjacent sequences: A236137 A236138 A236139 * A236141 A236142 A236143

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 19 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 December 2 20:59 EST 2022. Contains 358510 sequences. (Running on oeis4.)