a(n) = 100*n^2 - 2*n.

Terms

a(0) =0a(1) =98a(2) =396a(3) =894a(4) =1592a(5) =2490a(6) =3588a(7) =4886a(8) =6384a(9) =8082a(10) =9980a(11) =12078a(12) =14376a(13) =16874a(14) =19572a(15) =22470a(16) =25568a(17) =28866a(18) =32364a(19) =36062a(20) =39960a(21) =44058a(22) =48356a(23) =52854a(24) =57552a(25) =62450a(26) =67548a(27) =72846a(28) =78344a(29) =84042