The number of vertices on an octagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

A333109

The number of vertices on an octagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

Terms

    a(0) =57a(1) =1145a(2) =8417a(3) =29121a(4) =80345a(5) =167105a(6) =333297a(7) =570969a(8) =939113a(9) =1441153a(10) =2153937a(11) =3029913a(12) =4262929a(13) =5741473a(14) =7606745a(15) =9876585a(16) =12690553a(17) =15921777a(18) =19922289a(19) =24430633a(20) =29834073a(21) =35990065a(22) =43151521a(23) =51068689

External references