Numbers of the form a^a + b^b, with a > b > 0.

Terms

a(0) =5a(1) =28a(2) =31a(3) =257a(4) =260a(5) =283a(6) =3126a(7) =3129a(8) =3152a(9) =3381a(10) =46657a(11) =46660a(12) =46683a(13) =46912a(14) =49781a(15) =823544a(16) =823547a(17) =823570a(18) =823799a(19) =826668a(20) =870199a(21) =16777217a(22) =16777220a(23) =16777243a(24) =16777472a(25) =16780341a(26) =16823872a(27) =17600759a(28) =387420490a(29) =387420493