The number of vertices inside a hexagram formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

A333116

The number of vertices inside a hexagram formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

Terms

    a(0) =109a(1) =2761a(2) =16387a(3) =63943a(4) =167071a(5) =357919a(6) =711895a(7) =1283419a(8) =2040187a(9) =3173851a(10) =4909351a(11) =6730795a(12) =9868711a(13) =13101883a(14) =16984963a(15) =23055523a(16) =29896135a(17) =36496711a(18) =47223703a(19) =56703265a(20) =68999605a(21) =84927301a(22) =103692535a(23) =119208667

External references