Number of edges in 10-partite Turán graph of order n.

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =6a(5) =10a(6) =15a(7) =21a(8) =28a(9) =36a(10) =45a(11) =54a(12) =64a(13) =75a(14) =87a(15) =100a(16) =114a(17) =129a(18) =145a(19) =162a(20) =180a(21) =198a(22) =217a(23) =237a(24) =258a(25) =280a(26) =303a(27) =327a(28) =352a(29) =378