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!)
A204778 Number of (n+2)X6 0..2 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..2 introduced in row major order 1

%I #5 Mar 31 2012 12:37:03

%S 25190406,8643947616,2890032532056,966430412947296,323760110018338584,

%T 108409087458981913446,36302705908249227882336,

%U 12156529288557135619738464,4070799905213442743056301814

%N Number of (n+2)X6 0..2 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..2 introduced in row major order

%C Column 4 of A204782

%H R. H. Hardin, <a href="/A204778/b204778.txt">Table of n, a(n) for n = 1..31</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 19 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 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)