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!)
A234084 Number of (n+1)X(1+1) 0..5 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 10 1

%I #5 Dec 19 2013 07:34:02

%S 144,828,4720,28328,171136,1058160,6567360,41201312,258836736,

%T 1634181568,10321040640,65334469248,413583689728,2620872361728,

%U 16607229684736,105284419873280,667423413317632,4231949297097728,26832344201039872

%N Number of (n+1)X(1+1) 0..5 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 10

%C Column 1 of A234091

%H R. H. Hardin, <a href="/A234084/b234084.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 4*a(n-1) +42*a(n-2) -112*a(n-3) -552*a(n-4) +672*a(n-5) +2656*a(n-6) -64*a(n-7) -2176*a(n-8) -768*a(n-9)

%e Some solutions for n=5

%e ..3..2....3..0....2..3....2..0....1..2....0..3....2..3....3..4....2..3....3..4

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

%e ..2..1....3..2....3..2....4..4....3..4....0..3....2..3....3..4....2..3....4..3

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

%e ..2..3....3..2....3..2....2..4....3..0....0..1....3..2....4..3....3..4....3..4

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 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 April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)