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!)
A236090 Number of (n+1)X(2+1) 0..2 arrays colored with the difference of the maximum and the upper median in each 2X2 subblock 1

%I

%S 344,1960,10912,59398,321368,1787690,9900936,54118764,295217284,

%T 1633131298,9015043100,49376234152,270394664828,1491691040990,

%U 8218703963596,45077289476146,247327095667008,1362361458781028

%N Number of (n+1)X(2+1) 0..2 arrays colored with the difference of the maximum and the upper median in each 2X2 subblock

%C Column 2 of A236096

%H R. H. Hardin, <a href="/A236090/b236090.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 28*a(n-3) +591*a(n-4) +642*a(n-5) +1360*a(n-6) +3146*a(n-7) -10200*a(n-8) -7734*a(n-9) +9306*a(n-10) -5336*a(n-11) +14804*a(n-12) +19462*a(n-13) -6478*a(n-14) -2372*a(n-15) +3016*a(n-16) +2772*a(n-17) +24*a(n-18) -582*a(n-19) -53*a(n-20) for n>22

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 19 2014

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 20 03:25 EST 2022. Contains 350467 sequences. (Running on oeis4.)