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!)
A206690 Number of nX6 0..3 arrays with no element equal to another within two positions in the same row or column, and new values 0..3 introduced in row major order 1

%I

%S 8,376,2816,24492,213788,1915580,17277556,156946368,1429962032,

%T 13057140562,119353104128,1091748256156,9990044761998,91434371494388,

%U 836958605238016,7661779056726008,70141114109343664,642134221496445414

%N Number of nX6 0..3 arrays with no element equal to another within two positions in the same row or column, and new values 0..3 introduced in row major order

%C Column 6 of A206692

%H R. H. Hardin, <a href="/A206690/b206690.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 11 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 September 26 23:44 EDT 2022. Contains 357051 sequences. (Running on oeis4.)