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!)
A251929 Number of length n+2 0..2 arrays with the sum of the maximum minus the median of adjacent triples multiplied by some arrangement of +-1 equal to zero 1

%I #4 Dec 11 2014 12:13:51

%S 12,43,115,339,1047,3185,9614,28997,87432,263315,792052,2380535,

%T 7151068,21473847,64465845,193491115,580670152,1742425277,5228150762,

%U 15686292673,47062736335,141196283037,423605734627,1270852497809,3812631196199

%N Number of length n+2 0..2 arrays with the sum of the maximum minus the median of adjacent triples multiplied by some arrangement of +-1 equal to zero

%C Column 2 of A251935

%H R. H. Hardin, <a href="/A251929/b251929.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 10*a(n-1) -43*a(n-2) +112*a(n-3) -212*a(n-4) +314*a(n-5) -371*a(n-6) +366*a(n-7) -292*a(n-8) +172*a(n-9) -78*a(n-10) +2*a(n-11) +25*a(n-12) -16*a(n-13) +12*a(n-14) for n>17

%e Some solutions for n=6

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 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 April 24 11:49 EDT 2024. Contains 371936 sequences. (Running on oeis4.)