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!)
A223439 Generalized Petersen graph (8,2) coloring a rectangular array: number of nX7 0..15 arrays where 0..15 label nodes of a graph with edges 0,1 0,8 8,14 8,10 1,2 1,9 9,15 9,11 2,3 2,10 10,12 3,4 3,11 11,13 4,5 4,12 12,14 5,6 5,13 13,15 6,7 6,14 7,0 7,15 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph 1

%I #4 Mar 20 2013 06:28:33

%S 11664,1180256,179532768,33277934848,6790055219264,1445484467129440,

%T 313233804577725904,68373044838570536416,14968850924351337707600,

%U 3281073242585313313486816,719543293998612435740651440

%N Generalized Petersen graph (8,2) coloring a rectangular array: number of nX7 0..15 arrays where 0..15 label nodes of a graph with edges 0,1 0,8 8,14 8,10 1,2 1,9 9,15 9,11 2,3 2,10 10,12 3,4 3,11 11,13 4,5 4,12 12,14 5,6 5,13 13,15 6,7 6,14 7,0 7,15 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph

%C Column 7 of A223440

%H R. H. Hardin, <a href="/A223439/b223439.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..8..0..8.14..8.14..8....8..0..8.14.12.10.12....8..0..8.10.12.14..8

%e ..0..8.14..8.10..8.10....0..8.14..8.10.12.14....0..8.10..8.14.12.10

%e ..8..0..8..0..8.10..2....8..0..8.10..8.10..8....8..0..8.14.12.10..8

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 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 26 16:21 EST 2024. Contains 370352 sequences. (Running on oeis4.)