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

Terms

a(0) =79201a(1) =318401a(2) =717601a(3) =1276801a(4) =1996001a(5) =2875201a(6) =3914401a(7) =5113601a(8) =6472801a(9) =7992001a(10) =9671201a(11) =11510401a(12) =13509601a(13) =15668801a(14) =17988001a(15) =20467201a(16) =23106401a(17) =25905601a(18) =28864801a(19) =31984001a(20) =35263201a(21) =38702401a(22) =42301601a(23) =46060801