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!)
A234711 Number of (n+1) X (7+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant-stress 1 X 1 tilings). 0

%I

%S 6664130,11903466,21220178,48741018,110368418,311077338,850224914,

%T 2760580074,8598808130,30865204506

%N Number of (n+1) X (7+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6 (constant-stress 1 X 1 tilings).

%e Some solutions for n=1:

%e 0 4 1 4 3 5 1 3 0 0 1 7 2 0 0 7 0 0 6 1 1 6 0 7

%e 4 2 5 2 7 3 5 1 0 6 1 1 2 6 0 1 0 6 6 7 1 0 0 1

%Y Column 7 of A234712.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 29 2013

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 February 1 17:37 EST 2023. Contains 359993 sequences. (Running on oeis4.)