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!)
A221600 Number of nX2 arrays of occupancy after each element moves to some king-move neighbor, without move-in move-out left turns 1

%I

%S 1,19,140,1206,10020,84160,705156,5912277,49563492,415515336,

%T 3483440165,29203220338,244823382148,2052461910954,17206688780344,

%U 144251223226490,1209321306131007,10138271200549217,84993576475914931,712538449541938001

%N Number of nX2 arrays of occupancy after each element moves to some king-move neighbor, without move-in move-out left turns

%C Column 2 of A221602

%H R. H. Hardin, <a href="/A221600/b221600.txt">Table of n, a(n) for n = 1..72</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 20 2013

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 February 3 15:42 EST 2023. Contains 360035 sequences. (Running on oeis4.)