a(n) = 43046721*n^2 - 50729652*n + 14945957.

Terms

a(0) =7263026a(1) =85673537a(2) =250177490a(3) =500774885a(4) =837465722a(5) =1260250001a(6) =1769127722a(7) =2364098885a(8) =3045163490a(9) =3812321537a(10) =4665573026a(11) =5604917957a(12) =6630356330a(13) =7741888145a(14) =8939513402a(15) =10223232101a(16) =11593044242a(17) =13048949825a(18) =14590948850a(19) =16219041317