Number of vertices formed by infinite lines when connecting all vertices and all points that divide the sides of an equilateral triangle into n equal parts.

A344657

Number of vertices formed by infinite lines when connecting all vertices and all points that divide the sides of an equilateral triangle into n equal parts.

Terms

    a(0) =3a(1) =10a(2) =85a(3) =310a(4) =999a(5) =2299a(6) =4674a(7) =8878a(8) =14539a(9) =23116a(10) =35922a(11) =53830a(12) =74685a(13) =106957a(14) =140887a(15) =183718a(16) =240108a(17) =315997a(18) =392049a(19) =497518a(20) =599596a(21) =730762a(22) =888903a(23) =1083277a(24) =1257270a(25) =1502830a(26) =1760371a(27) =2047792a(28) =2362620a(29) =2771437

External references