OFFSET
0,2
COMMENTS
For symmetry reasons, a(n) is a multiple of 6 for any n > 0.
LINKS
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
FORMULA
a(n) = 6 iff n belongs to A007051.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Nov 21 2020
STATUS
approved