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!)
A187027 T(n,k)=Number of n-step one or two collinear space at a time queen's tours on a kXk board summed over all starting positions 6

%I

%S 1,4,0,9,12,0,16,56,24,0,25,132,296,24,0,36,240,1008,1344,0,0,49,380,

%T 2232,7056,5120,0,0,64,552,3936,19568,45152,15760,0,0,81,756,6120,

%U 39348,161256,263000,36816,0,0,100,992,8784,66360,376248,1251720,1384152,57904

%N T(n,k)=Number of n-step one or two collinear space at a time queen's tours on a kXk board summed over all starting positions

%C Table starts

%C .1..4.....9.......16........25........36.......49........64.......81.....100

%C .0.12....56......132.......240.......380......552.......756......992....1260

%C .0.24...296.....1008......2232......3936.....6120......8784....11928...15552

%C .0.24..1344.....7056.....19568.....39348....66360....100380...141408..189444

%C .0..0..5120....45152....161256....376248...696992...1121176..1647008.2273384

%C .0..0.15760...263000...1251720...3443028..7080688..12213336.18821144

%C .0..0.36816..1384152...9151912..30203792.69641344.129718288

%C .0..0.57904..6516592..62903536.254189928

%C .0..0.45856.27116200.405255984

%C .0..0.....0.98268864

%H R. H. Hardin, <a href="/A187027/b187027.txt">Table of n, a(n) for n = 1..98</a>

%e Some n=4 solutions for 4X4

%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..4..0..0....0..0..1..0

%e ..0..0..0..0....0..2..0..0....4..0..1..0....0..0..3..0....0..0..2..0

%e ..3..0..4..0....0..4..0..0....0..0..2..0....1..0..0..0....0..0..3..0

%e ..0..2..0..1....0..3..0..1....0..0..3..0....2..0..0..0....0..4..0..0

%Y Row 2 is A104188(n-1)

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_ Mar 02 2011

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 September 28 20:34 EDT 2022. Contains 357081 sequences. (Running on oeis4.)