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!)
A204053 Number of (n+2)X7 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order 1

%I

%S 4823759,45689226,315429190,2336174650,18962117027,135508809479,

%T 1017086083917,7592417722506,56889349938986,423304805355442,

%U 3129226285383207,23392351131337319,174669286581663845

%N Number of (n+2)X7 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order

%C Column 5 of A204056

%H R. H. Hardin, <a href="/A204053/b204053.txt">Table of n, a(n) for n = 1..29</a>

%e Some solutions for n=3

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

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

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

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

%e ..3..1..0..2..0..1..2....0..0..0..1..0..0..1....2..0..0..1..1..3..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 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 June 26 06:36 EDT 2022. Contains 354877 sequences. (Running on oeis4.)