a(n) = 32805000*n^2 - 55096200*n + 23133601.

Terms

a(0) =842401a(1) =44161201a(2) =153090001a(3) =327628801a(4) =567777601a(5) =873536401a(6) =1244905201a(7) =1681884001a(8) =2184472801a(9) =2752671601a(10) =3386480401a(11) =4085899201a(12) =4850928001a(13) =5681566801a(14) =6577815601a(15) =7539674401a(16) =8567143201a(17) =9660222001a(18) =10818910801a(19) =12043209601