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A223232 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, diagonal or antidiagonal neighbor moves along an icosahedral edge 1
15625, 7540985, 5127809545, 3843057179285, 3010781803380625, 2410480042269361205, 1952463524081506924645, 1591754706579747811787945, 1302463364554005567144837065, 1067991482533134242042535939665 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A223233

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..110

EXAMPLE

Some solutions for n=3

..0..6..0..6..0..6..0....0..6..0..5..0..1..2....0..6..0..6..4..8..2

..0..6..0..6..0..7..0....0..6..0..6..0..6..2....0..6..0..6..2..8..3

..0..6..0..1..0..2..0....0..6..0..6..5..6..0....0..6..0..6..2..8..1

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: A017130 A303155 A017226 * A017334 A265934 A017454

Adjacent sequences:  A223229 A223230 A223231 * A223233 A223234 A223235

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2013

STATUS

approved

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Last modified September 28 06:57 EDT 2021. Contains 347703 sequences. (Running on oeis4.)