a(n) = 64*n^2 + 2*n.

Terms

a(0) =0a(1) =66a(2) =260a(3) =582a(4) =1032a(5) =1610a(6) =2316a(7) =3150a(8) =4112a(9) =5202a(10) =6420a(11) =7766a(12) =9240a(13) =10842a(14) =12572a(15) =14430a(16) =16416a(17) =18530a(18) =20772a(19) =23142a(20) =25640a(21) =28266a(22) =31020a(23) =33902a(24) =36912a(25) =40050a(26) =43316a(27) =46710a(28) =50232a(29) =53882