Toroidal crossing number of complete graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =4a(8) =9a(9) =23a(10) =42a(11) =70a(12) =105a(13) =154a(14) =226a(15) =326