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!)
A221507 T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction 5

%I #4 Jan 18 2013 17:49:42

%S 0,1,0,0,9,0,1,44,64,0,0,446,664,441,0,1,3334,31663,12495,3025,0,0,

%T 27540,730874,2691211,221614,20736,0,1,219070,22664752,223123842,

%U 219689604,4010052,142129,0,0,1766136,617892584,26917553016,61691224718

%N T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction

%C Table starts

%C .0......1........0...........1...........0...........1.........0...........1

%C .0......9.......44.........446........3334.......27540....219070.....1766136

%C .0.....64......664.......31663......730874....22664752.617892584.17782943460

%C .0....441....12495.....2691211...223123842.26917553016

%C .0...3025...221614...219689604.61691224718

%C .0..20736..4010052.18054912942

%C .0.142129.72195950

%C .0.974169

%C .0

%H R. H. Hardin, <a href="/A221507/b221507.txt">Table of n, a(n) for n = 1..48</a>

%e Some solutions for n=3 k=4

%e ..1..1..3..0....0..0..0..0....0..0..1..1....1..0..1..0....1..0..1..1

%e ..1..1..1..1....1..3..2..2....0..4..1..0....1..2..0..3....0..3..0..1

%e ..0..3..0..0....2..1..1..0....2..0..2..1....1..1..2..0....2..0..2..1

%Y Column 2 is A049684

%K nonn,tabl

%O 1,5

%A _R. H. Hardin_ Jan 18 2013

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 September 17 21:55 EDT 2024. Contains 375990 sequences. (Running on oeis4.)