A223261 Rolling icosahedron footprints: number of nX6 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

3125, 1856465, 1158447605, 732779276465, 465517850602985, 296154779530302005, 188499365751451987865, 119997379439689408859465, 76393715103357920822289245, 48635305603930120643861903885

Offset

1,1

Comments

Column 6 of A223263

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3:
..0..6..2..8..4..2....0..6..2..6..2..6....0..6..0..6.10..5....0..6..4..6..0..1
..6..0..6..4..2..4....6..0..6..0..1..2....6..0..6..5..6.10....6..0..6.10..6..2
..0..6..0..2..6..2....0..6..0..6..0..1....0..6..0..6..0..5....0..6..0..6..5..6
Vertex neighbors:
0.->.1.2.5.6.7
1.->.0.2.3.7.8
2.->.0.1.4.6.8
3.->.1.7.8.9.11
4.->.2.6.8.9.10
5.->.0.6.7.10.11
6.->.0.2.4.5.10
7.->.0.1.3.5.11
8.->.1.2.3.4.9
9.->.3.4.8.10.11
10.->.4.5.6.9.11
11.->.3.5.7.9.10

Crossrefs

Sequence in context: A265933 A017453 A017585 * A223319 A222279 A169753

Adjacent sequences: A223258 A223259 A223260 * A223262 A223263 A223264

Keyword

nonn

Author

R. H. Hardin Mar 19 2013

Status

approved