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!)
A235246 Number of (n+1) X (6+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1

%I #7 Jun 18 2022 23:55:43

%S 288510,599342,1305758,3521538,9463558,28726138,85432998,274327842,

%T 861350910,2864080130,9315197206,31814010530,106323169366,

%U 371685914410,1271924315006,4544534816810,15898950277366,58024454397690

%N Number of (n+1) X (6+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%C Column 6 of A235248.

%H R. H. Hardin, <a href="/A235246/b235246.txt">Table of n, a(n) for n = 1..24</a>

%e Some solutions for n=1:

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 05 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 17 19:13 EDT 2024. Contains 374377 sequences. (Running on oeis4.)