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!)
A236065 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the difference of the upper median and the minimum in each 2X2 subblock 9
81, 360, 360, 1616, 1784, 1616, 7016, 8506, 8506, 7016, 31616, 41344, 45987, 41344, 31616, 138988, 200906, 221292, 221292, 200906, 138988, 620552, 983796, 1178874, 1189428, 1178874, 983796, 620552, 2734804, 4815318, 6003004, 6693198, 6693198 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......81.......360.......1616........7016........31616........138988

......360......1784.......8506.......41344.......200906........983796

.....1616......8506......45987......221292......1178874.......6003004

.....7016.....41344.....221292.....1189428......6693198......39556394

....31616....200906....1178874.....6693198.....44476077.....300043524

...138988....983796....6003004....39556394....300043524....2530095488

...620552...4815318...32549159...224877256...2014550540...19156234610

..2734804..23498914..160724066..1256067308..12237425826..140432536108

.12176064.114724352..869348096..7205418850..84261108266.1120211727420

.53818764.560870566.4373843360.41590160892.550970559570.9029381500148

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..180

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 14]

k=2: [order 32] for n>35

k=3: [order 94] for n>101

EXAMPLE

Some solutions for n=3 k=4

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

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

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

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

CROSSREFS

Sequence in context: A237472 A237465 A236997 * A206676 A205520 A236990

Adjacent sequences:  A236062 A236063 A236064 * A236066 A236067 A236068

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 18 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 January 20 10:18 EST 2022. Contains 350471 sequences. (Running on oeis4.)