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!)
A166768 Number of n X 4 1..4 arrays containing at least one of each value, and all equal values connected. 0

%I #5 Jun 07 2021 15:32:07

%S 24,3672,103800,1505784,15094248,120002640

%N Number of n X 4 1..4 arrays containing at least one of each value, and all equal values connected.

%e Some solutions for n=3

%e ...1.1.1.1...2.4.4.1...2.2.2.3...4.1.2.2...1.1.2.4...1.4.4.3...4.1.1.1

%e ...3.2.3.4...2.4.4.3...1.1.1.1...4.3.3.2...3.3.2.4...1.1.4.4...4.1.2.3

%e ...3.3.3.3...3.3.3.3...4.1.1.1...2.2.2.2...3.3.3.4...2.2.2.2...2.2.2.2

%e ------

%e ...3.3.3.1...2.2.1.4...2.2.4.4...3.3.3.2...3.4.1.4...2.1.3.2...4.3.3.3

%e ...3.2.3.1...2.1.1.3...3.3.3.3...1.4.3.3...4.4.4.4...2.1.4.2...2.1.3.3

%e ...2.2.2.4...2.3.3.3...3.1.1.1...1.3.3.3...4.4.2.2...2.2.2.2...1.1.1.1

%K nonn,more

%O 1,1

%A _R. H. Hardin_ Oct 21 2009

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 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)