Number of vertices in a complete bipartite graph where the n vertices of each part are placed on the vertices, and on opposite sides, of a regular 2n-gon.

A392971

Number of vertices in a complete bipartite graph where the n vertices of each part are placed on the vertices, and on opposite sides, of a regular 2n-gon.

Terms

    a(0) =2a(1) =5a(2) =13a(3) =31a(4) =81a(5) =145a(6) =335a(7) =597a(8) =785a(9) =1601a(10) =2433a(11) =3019a(12) =5029a(13) =6923a(14) =6935a(15) =12281a(16) =15915a(17) =18763a(18) =25533a(19) =31719a(20) =33727a(21) =47415a(22) =57159a(23) =64269a(24) =81071a(25) =95513a(26) =106141a(27) =130107a(28) =150573a(29) =158737

External references