a(n) = 80000*n^2 + 800*n + 1.

Terms

a(0) =80801a(1) =321601a(2) =722401a(3) =1283201a(4) =2004001a(5) =2884801a(6) =3925601a(7) =5126401a(8) =6487201a(9) =8008001a(10) =9688801a(11) =11529601a(12) =13530401a(13) =15691201a(14) =18012001a(15) =20492801a(16) =23133601a(17) =25934401a(18) =28895201a(19) =32016001a(20) =35296801a(21) =38737601a(22) =42338401a(23) =46099201