Numbers x = concat(a,b) such that b^a begins with the digits of x.

Terms

a(0) =25a(1) =59a(2) =102a(3) =104a(4) =250a(5) =590a(6) =1306a(7) =1976a(8) =2500a(9) =3763a(10) =12998a(11) =13060a(12) =19760a(13) =21912a(14) =25000a(15) =53216a(16) =71457a(17) =73365a(18) =137083a(19) =143507a(20) =214651a(21) =250000a(22) =348611a(23) =609185a(24) =732021a(25) =2500000a(26) =3323935a(27) =3486110a(28) =7848843a(29) =12122159