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A256571 a(n) is the total number of pentagrams in a variant of pentagram fractal after n iterations. 7
1, 6, 21, 56, 131, 281, 556, 1046, 1896, 3346, 5796, 9916, 16806, 28316, 47506 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Inspired by A255870. But at the higher iterations, the perimeter is an irregular polygon instead of a pentagon. The construction rule is sides to vertices expansion. See illustration in the links.
LINKS
CROSSREFS
Sequence in context: A346893 A337895 A145134 * A247904 A074745 A296821
KEYWORD
nonn,more
AUTHOR
Kival Ngaokrajang, Apr 02 2015
EXTENSIONS
a(9) corrected and a(10)-a(15) added by Udo Vieth, Jan 16 2023
STATUS
approved

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)