A337545 -id:A337545 - cp's OEIS frontend

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A337018 a(n) is the number of hexagons at distance n from the central hexagon of a hexaflake.

Original entry on oeis.org

1, 6, 6, 18, 18, 6, 18, 18, 18, 54, 54, 30, 54, 42, 6, 18, 18, 18, 54, 54, 30, 54, 42, 18, 54, 54, 54, 162, 162, 90, 162, 126, 30, 90, 90, 66, 162, 150, 78, 126, 90, 6, 18, 18, 18, 54, 54, 30, 54, 42, 18, 54, 54, 54, 162, 162, 90, 162, 126, 30, 90, 90, 66, 162

Offset: 0

Rémy Sigrist, Nov 21 2020

nonn

For symmetry reasons, a(n) is a multiple of 6 for any n > 0.

Rémy Sigrist, Table of n, a(n) for n = 0..3281
Rémy Sigrist, Illustration of initial terms
Rémy Sigrist, PARI program for A337018
Wikipedia, Hexaflake

Cf. A337132 (Vicsek fractal analog), A337545 (pentaflake analog), A339124 (golden square fractal analog).

PARI
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See Links section.
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a(n) = 6 iff n belongs to A007051.

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