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!)
A205756 Number of 5X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order 1

%I #5 Mar 31 2012 12:37:07

%S 2268,12384,63838,383290,2244622,14131118,88143754,572187838,

%T 3709029086,24613160072,163670433374,1104155427184,7473775678826,

%U 51060113489722,350078262846120,2415378206667070,16720104940755442,116264115349570420

%N Number of 5X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order

%C Row 4 of A205753

%H R. H. Hardin, <a href="/A205756/b205756.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 30 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 March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)