a(n) = 139*n^2 - 2307*n + 3331.

Terms

a(0) =3331a(1) =1163a(2) =-727a(3) =-2339a(4) =-3673a(5) =-4729a(6) =-5507a(7) =-6007a(8) =-6229a(9) =-6173a(10) =-5839a(11) =-5227a(12) =-4337a(13) =-3169a(14) =-1723a(15) =1a(16) =2003a(17) =4283a(18) =6841a(19) =9677a(20) =12791a(21) =16183a(22) =19853a(23) =23801a(24) =28027a(25) =32531a(26) =37313a(27) =42373a(28) =47711a(29) =53327