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!)
A220259 T(n,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and vertical neighbors in a random 0..2 nXk array 5

%I #4 Dec 08 2012 17:14:55

%S 1,2,2,4,10,4,7,35,35,7,12,132,243,132,12,21,497,1875,1875,497,21,37,

%T 1881,15150,31917,15150,1881,37,65,7102,115776,512622,512622,115776,

%U 7102,65,114,26812,903439,8112068,17112081,8112068,903439,26812,114,200

%N T(n,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and vertical neighbors in a random 0..2 nXk array

%C Table starts

%C ...1......2.......4.........7........12........21........37.........65......114

%C ...2.....10......35.......132.......497......1881......7102......26812...101196

%C ...4.....35.....243......1875.....15150....115776....903439....7005461.54249716

%C ...7....132....1875.....31917....512622...8112068.127838919.2013005761

%C ..12....497...15150....512622..17112081.541819065

%C ..21...1881..115776...8112068.541819065

%C ..37...7102..903439.127838919

%C ..65..26812.7005461

%C .114.101196

%C .200

%H R. H. Hardin, <a href="/A220259/b220259.txt">Table of n, a(n) for n = 1..59</a>

%e Some solutions for n=3 k=4

%e ..0..1..0..1....0..0..0..0....0..0..0..1....1..0..1..1....0..1..1..1

%e ..0..1..0..0....0..0..0..0....0..1..0..0....1..0..1..1....0..0..1..0

%e ..0..0..0..1....1..1..1..0....0..0..1..1....1..1..0..1....1..0..1..0

%Y Column 1 is A005251(n+2)

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_ Dec 08 2012

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 May 7 15:53 EDT 2024. Contains 372310 sequences. (Running on oeis4.)