The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A267933 T(n,k)=Number of nXk 0..3 arrays with every repeated value in every row and column greater than the previous repeated value. 6

%I #4 Jan 22 2016 10:10:16

%S 4,16,16,60,256,60,222,3600,3600,222,804,49284,178068,49284,804,2872,

%T 646416,8459154,8459154,646416,2872,10132,8248384,376812420,

%U 1376175262,376812420,8248384,10132,35383,102657424,16109362560,205495778969

%N T(n,k)=Number of nXk 0..3 arrays with every repeated value in every row and column greater than the previous repeated value.

%C Table starts

%C ......4..........16.............60..............222...............804

%C .....16.........256...........3600............49284............646416

%C .....60........3600.........178068..........8459154.........376812420

%C ....222.......49284........8459154.......1376175262......205495778969

%C ....804......646416......376812420.....205495778969...100687082932722

%C ...2872.....8248384....16109362560...29057389299071.46100277695598540

%C ..10132...102657424...663451196118.3909876972823819

%C ..35383..1251956689.26507885328672

%C .122480.15001350400

%C .420752

%H R. H. Hardin, <a href="/A267933/b267933.txt">Table of n, a(n) for n = 1..60</a>

%F Empirical for column k:

%F k=1: [linear recurrence of order 8]

%F k=2: [order 21]

%F k=3: [order 81]

%e Some solutions for n=3 k=4

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Jan 22 2016

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.

Last modified October 2 18:16 EDT 2023. Contains 365840 sequences. (Running on oeis4.)