A330911 The number of edges formed by straight line segments mutually connecting all vertices of a semicircular polygon defined in A333642.

5, 15, 35, 76, 142, 251, 408, 576, 947, 1367, 1845, 2600, 3460, 4011, 5822, 7386, 9023, 11423, 13967, 16242, 20330, 24235, 28222, 33686, 39327, 44967, 52733, 60608, 67383, 78947, 89530, 100040, 113885, 127791, 141925, 159356, 177158, 194895, 217232, 239662

Offset: 1

Author

Scott R. Shannon and N. J. A. Sloane, May 02 2020

Keywords

• nonn

Comments

See A333642 for a precise definition of the polygon and images.

Links

• Lars Blomberg, Table of n, a(n) for n = 1..100

Crossrefs

Cf. A333642 (regions), A330913 (vertices), A330914 (n-gons), A333278, A333027, A135565.

Extensions

a(21) and beyond from Lars Blomberg, May 03 2020