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A223237 Rolling icosahedron footprints: number of 5Xn 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
20736, 142805, 26157625, 2191464605, 266409703885, 27049155640325, 3010781803380625, 319668431152592585, 34788800528856366205, 3737470592349481922045, 404261376372354175571785 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A223233

LINKS

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

EXAMPLE

Some solutions for n=3

..0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0

..0..6..0...10..6..0....4..6..0....0..6..0....4..6..0....0..6..0....4..6..0

..0..2..0....0..6..2....5..6..0....0..5.10...10..6..2....0..7..5....0..6..4

..0..5..0...10..6..4....0..7..5....0..5..6....5..6..4....0..6..5....4..2..0

..6..5..6...10..6..5....0..7.11....0..5.10....0..6..5....2..6..4....0..2..8

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: A292021 A183631 A340175 * A017404 A017524 A223325

Adjacent sequences:  A223234 A223235 A223236 * A223238 A223239 A223240

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2013

STATUS

approved

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Last modified October 28 04:43 EDT 2021. Contains 348313 sequences. (Running on oeis4.)