A302176 - OEIS

A302176

Coordination sequence for a node in a Penrose tiling with 5-fold symmetry.

1, 5, 5, 20, 15, 25, 20, 45, 35, 50, 45, 45, 55, 75, 60, 65, 65, 100, 80, 105, 95, 85, 95, 130, 115, 135, 120, 105, 135, 160, 135, 125, 145, 185, 160, 190, 165, 145, 180, 215, 185, 165, 185, 240, 205, 245, 220, 185, 215, 270, 240, 275, 245, 205, 255

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

COMMENTS

Note that this is not THE Penrose tiling, but a variant. See Klee link. - N. J. A. Sloane, Jan 07 2020

LINKS

Bradley Klee, Table of n, a(n) for n = 0..100

Bradley Klee, Fixing RegionMember & A302176 at once, Wolfram Community, Jan 06 2019

Bradley Klee, Illustration of initial terms (1) (extracted from the Wolfram Community link)

Bradley Klee, Illustration of initial terms (2) (extracted from the Wolfram Community link)

Anton Shutov and Andrey Maleev, Coordination numbers of the vertex graph of a Penrose tiling, Acta Cryst. (2018). A74, 112-122.

Anton Shutov and Andrey Maleev, Coordination numbers of the vertex graph of a Penrose tiling, Acta Cryst. (2018). A74, 112-122. [Annotated copy of Fig. 1, to illustrate initial terms of the sequence; with permission.]

Index entries for coordination sequences of aperiodic tilings

MATHEMATICA

See Klee link.

CROSSREFS

Cf. A302177, A302841, A302842.

Sequence in context: A201803 A151789 A339320 * A094338 A205882 A099921

Adjacent sequences: A302173 A302174 A302175 * A302177 A302178 A302179

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 03 2018

EXTENSIONS

More terms from Bradley Klee, Jan 09 2020

STATUS

approved