a(n) = 1225*n^2 - 35.

Terms

a(0) =1190a(1) =4865a(2) =10990a(3) =19565a(4) =30590a(5) =44065a(6) =59990a(7) =78365a(8) =99190a(9) =122465a(10) =148190a(11) =176365a(12) =206990a(13) =240065a(14) =275590a(15) =313565a(16) =353990a(17) =396865a(18) =442190a(19) =489965a(20) =540190a(21) =592865a(22) =647990a(23) =705565a(24) =765590a(25) =828065a(26) =892990a(27) =960365a(28) =1030190a(29) =1102465