Number of edges in 11-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) =55a(12) =65a(13) =76a(14) =88a(15) =101a(16) =115a(17) =130a(18) =146a(19) =163a(20) =181a(21) =200a(22) =220a(23) =240a(24) =261a(25) =283a(26) =306a(27) =330a(28) =355a(29) =381