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!)
A207729 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically 12

%I #5 Mar 31 2012 12:37:19

%S 2,4,4,6,16,6,9,36,36,9,15,81,78,81,14,25,225,169,189,196,21,40,625,

%T 611,441,490,441,31,64,1600,2209,2163,1225,1113,961,46,104,4096,6016,

%U 10609,8575,2809,2449,2116,68,169,10816,16384,33063,60025,27931,6241,5474,4624

%N T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically

%C Table starts

%C ..2....4....6.....9.....15......25.......40.......64........104.........169

%C ..4...16...36....81....225.....625.....1600.....4096......10816.......28561

%C ..6...36...78...169....611....2209.....6016....16384......51840......164025

%C ..9...81..189...441...2163...10609....33063...103041.....418263.....1697809

%C .14..196..490..1225...8575...60025...211680...746496....4078944....22287841

%C .21..441.1113..2809..27931..277729..1029231..3814209...27996255...205492225

%C .31..961.2449..6241..88243.1247689..4799749.18464209..184732327..1848226081

%C .46.2116.5474.14161.288813.5890329.23473944.93547584.1307760792.18282014521

%H R. H. Hardin, <a href="/A207729/b207729.txt">Table of n, a(n) for n = 1..649</a>

%e Some solutions for n=4 k=3

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

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

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

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

%Y Column 1 is A038718(n+2)

%Y Column 2 is A207069

%Y Row 1 is A006498(n+2)

%Y Row 2 is A189145(n+2)

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Feb 19 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 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)