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!)
A172766 Number of 3*n X n 0..3 arrays with row sums 5 and column sums 15 1

%I #4 Mar 31 2012 12:35:41

%S 0,20,95635680,28021865662196736,180748183717038324996985791,

%T 15496001580602804970376043343562432320,

%U 12274752385434683822697731132401886699781192750720

%N Number of 3*n X n 0..3 arrays with row sums 5 and column sums 15

%H R. H. Hardin, <a href="/A172766/b172766.txt">Table of n, a(n) for n=1..13</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010

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 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)