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A223238 Rolling icosahedron footprints: number of 6Xn 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
248832, 1856465, 842416625, 146259564725, 42210625593305, 9343721361109325, 2410480042269361205, 569856683384487837845, 141861478546517230929185, 34264186727962091778301265, 8425769874595179617059603645 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A223233

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..36

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

..2..6..0....0..6..0....0..6..0....0..6..0....2..6..0....4..6..0....2..6..0

..0..6.10....0..7..5....0..5.10....2..1..0....4..6..4....4..2..0....0..6..2

.10..6.10....0..6..0...11..5.11....8..1..0....4..6..5....8..2..6....4..6..5

.10..4..2....0..7..0...11..5..6....8..1..0....5..6.10....1..2..1....4..6.10

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: A229872 A172796 A268842 * A017405 A109691 A017525

Adjacent sequences:  A223235 A223236 A223237 * A223239 A223240 A223241

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2013

STATUS

approved

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Last modified October 21 05:28 EDT 2021. Contains 348141 sequences. (Running on oeis4.)