A335769 - OEIS

(Translated by https://www.hiragana.jp/)
A335769 - OEIS

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

A335769

a(n) is the number of regions formed by n-secting the angles of an octagon.

4

1, 8, 25, 104, 321, 80, 617, 624, 745, 1056, 1617, 896, 2233, 2224, 2465, 3024, 3929, 2472, 4809, 4848, 5193, 5944, 7217, 5528, 8305, 8456, 8929, 9856, 11513, 9336, 12849, 13080, 13617, 14816, 16809, 13744, 18417, 18632, 19329, 20728, 23073, 19936, 25001

(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=19

Lars Blomberg, Illustration for n=20

CROSSREFS

Cf. A333075 (n-sected sides, not angles), A335770 (vertices), A335771 (edges), A335772 (ngons).

Sequence in context: A042637 A133661 A229443 * A139026 A135942 A181207

Adjacent sequences: A335766 A335767 A335768 * A335770 A335771 A335772

KEYWORD

nonn

AUTHOR

Lars Blomberg, Jun 23 2020

STATUS

approved