80000n^2 - 120800n + 45601.

Terms

a(0) =4801a(1) =124001a(2) =403201a(3) =842401a(4) =1441601a(5) =2200801a(6) =3120001a(7) =4199201a(8) =5438401a(9) =6837601a(10) =8396801a(11) =10116001a(12) =11995201a(13) =14034401a(14) =16233601a(15) =18592801a(16) =21112001a(17) =23791201a(18) =26630401a(19) =29629601a(20) =32788801a(21) =36108001a(22) =39587201a(23) =43226401