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A338992 Number of vertices of a hexagonal tessellation that lie on subsequent circles centered at the center of one hexagon. 2
0, 6, 6, 12, 12, 6, 12, 6, 12, 12, 12, 12, 18, 12, 12, 6, 12, 12, 12, 12, 24, 12, 6, 12, 12, 12, 6, 12, 12, 24, 12, 12, 12, 12, 12, 18, 12, 12, 12, 12, 18, 12, 12, 12, 24, 12, 12, 12, 12, 24, 6, 24, 12, 12, 12, 12, 6, 12, 24, 12, 12, 12, 12, 12, 12, 12, 24, 12, 18 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Radii of these circles are square roots of A202822.

LINKS

Table of n, a(n) for n=0..68.

Szymon Lukaszyk, MATLAB script

Szymon Lukaszyk, A short note about the geometry of graphene, ResearchGate, (2020).

Szymon Lukaszyk, Illustration of the subsequent 36 radii around a hex center.

CROSSREFS

Cf. A202822, A338947 (similar but with circles centered at a vertex of one hexagon).

Sequence in context: A028317 A220435 A340512 * A055665 A168328 A176569

Adjacent sequences:  A338989 A338990 A338991 * A338993 A338994 A338995

KEYWORD

nonn

AUTHOR

Szymon Lukaszyk, Nov 17 2020

STATUS

approved

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Last modified January 28 11:15 EST 2022. Contains 350655 sequences. (Running on oeis4.)