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!)
A185565 1/4 the number of nX7 0..3 arrays with no element equal both to the element above and to the element to its left 2

%I #5 Mar 31 2012 12:36:02

%S 4096,45562500,504547256880,5586628402633500,61858104930689319360,

%T 684925618712729136913980,7583858300260627032845531520,

%U 83972485690826213759616527499540,929787724653148422947168982361958940

%N 1/4 the number of nX7 0..3 arrays with no element equal both to the element above and to the element to its left

%C Column 7 of A185567

%H R. H. Hardin, <a href="/A185565/b185565.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X7 with a(1,1)=0

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 31 2011

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 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)