login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A236704 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median of every 2X2 subblock 7
81, 426, 426, 2285, 3188, 2285, 12076, 23788, 23788, 12076, 64277, 178232, 259396, 178232, 64277, 340944, 1338314, 2832926, 2832926, 1338314, 340944, 1814328, 10041714, 31409880, 46692992, 31409880, 10041714, 1814328, 9631020, 75235940 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........81.........426..........2285..........12076...........64277

.......426........3188.........23788.........178232.........1338314

......2285.......23788........259396........2832926........31409880

.....12076......178232.......2832926.......46692992.......775050154

.....64277.....1338314......31409880......775050154.....19605710895

....340944....10041714.....343725916....12823407292....488730626484

...1814328....75235940....3791095422...211713828688..12281928596332

...9631020...563994510...41527455416..3511115688000.307621332573176

..51194672..4230366698..459098074574.58239156471582

.271870052.31726827262.5029066110784

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 13]

k=2: [order 36] for n>37

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A238173 A206407 A236610 * A236604 A236698 A235421

Adjacent sequences:  A236701 A236702 A236703 * A236705 A236706 A236707

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 30 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 May 28 15:33 EDT 2020. Contains 334684 sequences. (Running on oeis4.)