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!)
A198978 Number of nX4 0..5 arrays with values 0..5 introduced in row major order and no element equal to any horizontal or vertical neighbor 2

%I #5 Mar 31 2012 12:36:35

%S 5,481,146286,53082012,19622872903,7267830860056,2692353648978984,

%T 997397244990907738,369492074075459555844,136880688981914387733120,

%U 50708322978926251631508008,18785221234054066344117511329

%N Number of nX4 0..5 arrays with values 0..5 introduced in row major order and no element equal to any horizontal or vertical neighbor

%C Column 4 of A198982

%H R. H. Hardin, <a href="/A198978/b198978.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n) = 454*a(n-1) -33435*a(n-2) +955655*a(n-3) -13146749*a(n-4) +95351613*a(n-5) -373512375*a(n-6) +780821577*a(n-7) -866661210*a(n-8) +478426797*a(n-9) -102202326*a(n-10)

%e Some solutions with all values from 0 to 5 for n=5

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 01 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 June 29 18:23 EDT 2024. Contains 373855 sequences. (Running on oeis4.)