The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A208870 Number of nX6 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors 1

%I

%S 187,334618,683903931,1404920207834,2887736845657700,

%T 5935974611645510227,12201956787655438957014,

%U 25082292111547260024518313,51559059416667161930347967813,105984596999356698511898369562313

%N Number of nX6 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors

%C Column 6 of A208872

%H R. H. Hardin, <a href="/A208870/b208870.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 02 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.

Last modified March 22 04:35 EDT 2023. Contains 361413 sequences. (Running on oeis4.)