Let G_n denote the planar graph defined in A358746 with the addition, if n is odd, of the circle containing the initial n points; sequence gives the number of edges in G_n.

A370977

Let G_n denote the planar graph defined in A358746 with the addition, if n is odd, of the circle containing the initial n points; sequence gives the number of edges in G_n.

Terms

    a(0) =1a(1) =2a(2) =15a(3) =16a(4) =125a(5) =138a(6) =539a(7) =432a(8) =1557a(9) =1450a(10) =3707a(11) =3120a(12) =7501a(13) =6874a(14) =13575a(15) =12000a(16) =23273a(17) =20970a(18) =36347a(19) =32400a(20) =54873a(21) =51194a(22) =79695a(23) =70752a(24) =113125a(25) =105274a(26) =154791a(27) =144480a(28) =206741a(29) =195810

External references