A335781 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A335781

a(n) is the number of regions formed by n-secting the angles of a nonagon (enneagon).

1, 18, 127, 162, 388, 468, 154, 846, 1288, 1422, 1945, 2106, 2827, 1260, 3700, 3870, 4798, 4950, 5995, 6318, 4879, 7524, 8830, 9108, 10387, 10764, 12331, 8730, 13933, 14454, 16147, 16434, 18325, 18846, 16363, 20718, 23077, 23472, 25516, 26154, 28486, 23274

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..200

Lars Blomberg, Illustration for n=3

Lars Blomberg, Illustration for n=4

Lars Blomberg, Illustration for n=13

Lars Blomberg, Illustration for n=14

CROSSREFS

Cf. A332421 (n-sected sides, not angles), A335782 (vertices), A335783 (edges), A335784 (ngons).

Sequence in context: A223212 A297027 A027566 * A041620 A375329 A244879

Adjacent sequences: A335778 A335779 A335780 * A335782 A335783 A335784

KEYWORD

nonn

AUTHOR

Lars Blomberg, Jun 24 2020

STATUS

approved

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.