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!)
A196139 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4 0

%I

%S 1,5,7,83,481,2599,24615,330889,4431097,82611569,1973678929,

%T 55783136985

%N Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4

%C Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 4's, every 3 is next to 3 1's, every 4 is next to 4 2's

%C Diagonal of A196146

%e Some solutions for n=4

%e .1.3.1.0...0.1.3.1...1.3.1.0...0.0.1.1...0.1.1.0

%e .0.1.1.0...0.1.1.0...0.1.1.0...1.1.1.0...1.1.1.1

%e .1.1.1.1...0.1.1.0...0.1.1.1...3.1.1.0...1.0.0.1

%e .1.0.0.1...1.3.1.0...1.1.0.1...1.0.1.1...1.0.0.1

%K nonn

%O 1,2

%A _R. H. Hardin_ Sep 28 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 4 05:49 EST 2023. Contains 360046 sequences. (Running on oeis4.)