A256597 a(n) is the total number of pentagrams in a variant of pentagram fractal after n iterations.

1, 11, 76, 436, 2441

Offset

1,2

Comments

Inspired by A255870. But the scale factor is tan(Pi/10) instead of 1/phi.

See illustration in the links.

Links

Table of n, a(n) for n=1..5.

Kival Ngaokrajang, Illustration of initial terms

Crossrefs

Cf. A255870, A256429, A256569, A256571, A256582, A256583.

Sequence in context: A122589 A302382 A034269 * A245561 A056914 A232032

Adjacent sequences: A256594 A256595 A256596 * A256598 A256599 A256600

Keyword

nonn,more

Author

Kival Ngaokrajang, Apr 04 2015

Status

approved