|
%I #6 Mar 19 2013 06:35:01
%S 15625,24134045,39655444525,66349405785905,111705181963446505,
%T 188499365751451987865,318367455270147525993445,
%U 537892337767667036882186525,908907301291035542721838482085
%N Rolling icosahedron footprints: number of nX7 0..11 arrays starting with 0 where 0..11 label vertices of an icosahedron and every array movement to a horizontal or vertical neighbor moves along an icosahedral edge
%C Column 7 of A223263
%H R. H. Hardin, <a href="/A223262/b223262.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..0..6..0..6..0..2..1....0..6..0..6..5.11..7....0..6..0..6..0..2..1
%e ..6..0..6..0..2..1..8....6..0..6..0..7..5..0....6..0..6..0..7..0..2
%e ..0..6..0..1..0..2..4....0..6..0..6..5..0..7....0..6..0..1..0..1..8
%e Vertex neighbors:
%e 0.->.1.2.5.6.7
%e 1.->.0.2.3.7.8
%e 2.->.0.1.4.6.8
%e 3.->.1.7.8.9.11
%e 4.->.2.6.8.9.10
%e 5.->.0.6.7.10.11
%e 6.->.0.2.4.5.10
%e 7.->.0.1.3.5.11
%e 8.->.1.2.3.4.9
%e 9.->.3.4.8.10.11
%e 10.->.4.5.6.9.11
%e 11.->.3.5.7.9.10
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 19 2013
| 