a(n) = 15780962*n^2 - 5618000*n + 500001.

Terms

a(0) =10662963a(1) =52387849a(2) =125674659a(3) =230523393a(4) =366934051a(5) =534906633a(6) =734441139a(7) =965537569a(8) =1228195923a(9) =1522416201a(10) =1848198403a(11) =2205542529a(12) =2594448579a(13) =3014916553a(14) =3466946451a(15) =3950538273a(16) =4465692019a(17) =5012407689a(18) =5590685283