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!)
A199225 Number of nX3 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors 1

%I #5 Mar 31 2012 12:36:35

%S 1,15,110,1114,10790,108608,1114424,11614563,122555420,1306096140,

%T 14036296174,151900593514,1653715009450,18096656251093,

%U 198923288701426,2195264844234822,24311220765553010,270073032889614065

%N Number of nX3 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors

%C Column 3 of A199230

%H R. H. Hardin, <a href="/A199225/b199225.txt">Table of n, a(n) for n = 1..58</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Nov 04 2011

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 February 20 21:52 EST 2024. Contains 370219 sequences. (Running on oeis4.)