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!)
A237108 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal 9

%I #4 Feb 03 2014 06:20:02

%S 81,385,385,1881,3787,1881,9491,39235,39235,9491,48569,435113,848549,

%T 435113,48569,252415,4975145,20079181,20079181,4975145,252415,1324297,

%U 58074637,485177201,1032827165,485177201,58074637,1324297,7013479

%N T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal

%C Table starts

%C .......81.........385............1881...............9491.................48569

%C ......385........3787...........39235.............435113...............4975145

%C .....1881.......39235..........848549...........20079181.............485177201

%C .....9491......435113........20079181.........1032827165...........53528626069

%C ....48569.....4975145.......485177201........53528626069.........5870133564899

%C ...252415....58074637.....11899510847......2808787399965.......651822582383487

%C ..1324297...685334343....293281801479....147635666660707.....72365031298763069

%C ..7013479..8138935643...7246691140947...7771739485974973...8045311769065304851

%C .37376009.96985032775.179233623871063.409254548407433443.894539155590606377951

%H R. H. Hardin, <a href="/A237108/b237108.txt">Table of n, a(n) for n = 1..180</a>

%F Empirical for column k:

%F k=1: [linear recurrence of order 11]

%F k=2: [order 23]

%F k=3: [order 54]

%e Some solutions for n=2 k=4

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Feb 03 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 August 9 11:22 EDT 2024. Contains 375042 sequences. (Running on oeis4.)