Even-digit perfect powers.

Terms

a(0) =4a(1) =8a(2) =64a(3) =400a(4) =484a(5) =2048a(6) =4624a(7) =6084a(8) =6400a(9) =8000a(10) =8464a(11) =26244a(12) =28224a(13) =40000a(14) =40804a(15) =48400a(16) =64000a(17) =68644a(18) =88804a(19) =228484a(20) =242064a(21) =248004a(22) =446224a(23) =462400a(24) =608400a(25) =640000a(26) =806404a(27) =824464a(28) =846400a(29) =868624