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!)
A236804 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal 3

%I #4 Jan 31 2014 06:31:00

%S 1033,8825,85929,929447,9558409,107087939,1117775361,12821027315,

%T 135199336873,1580326999835,16792477473969,199287485892947,

%U 2129881236360889,25583932979862059,274630528704260481

%N Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal

%C Column 3 of A236809

%H R. H. Hardin, <a href="/A236804/b236804.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 24*a(n-1) -55*a(n-2) -2772*a(n-3) +26568*a(n-4) -71616*a(n-5) -74996*a(n-6) +644112*a(n-7) -762032*a(n-8) -588288*a(n-9) +1612416*a(n-10) -783360*a(n-11)

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 31 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 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)