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!)
A206255 T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock having zero permanent. 9

%I #10 Apr 18 2023 09:44:36

%S 49,361,361,1600,8029,1600,9409,99856,99856,9409,47089,1718209,

%T 1364224,1718209,47089,258064,26512201,49336576,49336576,26512201,

%U 258064,1343281,434613664,944701696,4556324929,944701696,434613664,1343281,7198489

%N T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock having zero permanent.

%C Table starts

%C ......49..........361...........1600..............9409................47089

%C .....361.........8029..........99856...........1718209.............26512201

%C ....1600........99856........1364224..........49336576............944701696

%C ....9409......1718209.......49336576........4556324929.........226637884225

%C ...47089.....26512201......944701696......226637884225.......14139111560401

%C ..258064....434613664....27285753856....16533087493120.....2261195747329024

%C .1343281...6990799321...603269103616..1006239668280961...186370092021300625

%C .7198489.113636628469.15860529270784.68438717405988481.24455901146017548025

%H R. H. Hardin, <a href="/A206255/b206255.txt">Table of n, a(n) for n = 1..611</a>

%F Column 1 is A006130(n+2)^2.

%e Some solutions for n=4, k=3

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

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

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

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

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

%Y Cf. A006130.

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Feb 05 2012

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 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)