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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A334458 Number of vertices in a polygon whose boundary consists of n+2 equally space points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition. 3

%I #12 Dec 29 2023 14:23:32

%S 1,4,12,39,125,271,609,1076,1884,2950,4642,6541,9607,12969,17505,

%T 23034,30294,37888,48488,59404,73506,88779,108077,127412,153000,

%U 178514,210366,242961,283243,322120,373147,422454,482442,542604,615300,685885,773189,857791

%N Number of vertices in a polygon whose boundary consists of n+2 equally space points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition.

%C A semicircular polygon with 2n+2 points is created by placing n+2 equally spaced vertices along the semicircle's arc (including the two end vertices). Also place n+2 equally spaced vertices along the diameter (again including the same two end vertices). Now connect every pair of vertices by a straight line segment. The sequence gives the number of vertices in the resulting figure.

%H Lars Blomberg, <a href="/A334458/b334458.txt">Table of n, a(n) for n = 0..50</a>

%Y Cf. A333519, A334459

%K nonn

%O 0,2

%A _Lars Blomberg_, May 01 2020

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 12 17:00 EDT 2024. Contains 375113 sequences. (Running on oeis4.)