login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons 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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A236613 Number of (n+1)X(3+1) 0..2 arrays colored with the maximum plus the upper median of every 2X2 subblock 1
1885, 17114, 147683, 1064688, 8747914, 75546260, 676215558, 5559284940, 47828701612, 413368542268, 3663194767350, 30670143612032, 265325487282310, 2282779070568664, 20059511297301622, 169553173100367000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A236618

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A252111 A259960 A338705 * A190133 A029564 A235295

Adjacent sequences:  A236610 A236611 A236612 * A236614 A236615 A236616

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 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 December 6 13:24 EST 2021. Contains 349563 sequences. (Running on oeis4.)