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!)
A222742 Number of nX3 0..3 arrays with exactly floor(nX3/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1

%I #4 Mar 04 2013 06:50:27

%S 0,32,2438,125094,6821264,413021606,24065512554,1471765337998,

%T 87152464030990,5404644628233066,322906836991829172,

%U 20211764295806702232,1215888385906731445434,76597296936236782196484

%N Number of nX3 0..3 arrays with exactly floor(nX3/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

%C Column 3 of A222747

%H R. H. Hardin, <a href="/A222742/b222742.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 04 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 April 25 10:51 EDT 2024. Contains 371967 sequences. (Running on oeis4.)