The number of vertices on a concave circular triangle formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.
A340686
The number of vertices on a concave circular triangle formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.
Terms
- a(0) =3a(1) =10a(2) =24a(3) =76a(4) =168a(5) =391a(6) =819a(7) =1447a(8) =2949a(9) =4153a(10) =6393a(11) =8293a(12) =12048a(13) =14857a(14) =20670a(15) =25972a(16) =33123a(17) =41026a(18) =50379a(19) =63700a(20) =76560a(21) =96628a(22) =113262a(23) =135076a(24) =160050a(25) =183484a(26) =215355a(27) =244435a(28) =288861a(29) =322276
External references
- oeis: A340686