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A223262 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 1
15625, 24134045, 39655444525, 66349405785905, 111705181963446505, 188499365751451987865, 318367455270147525993445, 537892337767667036882186525, 908907301291035542721838482085 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A223263

LINKS

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

EXAMPLE

Some solutions for n=3

..0..6..0..6..0..2..1....0..6..0..6..5.11..7....0..6..0..6..0..2..1

..6..0..6..0..2..1..8....6..0..6..0..7..5..0....6..0..6..0..7..0..2

..0..6..0..1..0..2..4....0..6..0..6..5..0..7....0..6..0..1..0..1..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: A017334 A265934 A017454 * A017586 A223320 A222280

Adjacent sequences:  A223259 A223260 A223261 * A223263 A223264 A223265

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 2013

STATUS

approved

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Last modified November 30 08:19 EST 2021. Contains 349419 sequences. (Running on oeis4.)