The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A234989 Number of (n+1) X (6+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1

%I #6 Jun 20 2022 00:48:21

%S 163416,1026784,8616068,105948984,1507413164,24740904388,433293595046,

%T 8076317372004,155302530533130,3074015131838128,61768316675114716,

%U 1258147349976954976,25815980445306370036,533174799308048822422

%N Number of (n+1) X (6+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%H R. H. Hardin, <a href="/A234989/b234989.txt">Table of n, a(n) for n = 1..41</a>

%e Some solutions for n=1:

%e 1 0 5 4 5 2 1 3 4 3 2 3 2 5 4 3 5 4 3 4 2

%e 4 1 4 5 4 3 0 0 3 4 5 4 1 2 3 0 4 1 2 5 1

%Y Column 6 of A234991.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 02 2014

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.

Last modified August 5 12:05 EDT 2024. Contains 374950 sequences. (Running on oeis4.)