Numbers of the form j^k * k^j, where j,k > 1.

Terms

a(0) =16a(1) =72a(2) =256a(3) =729a(4) =800a(5) =2304a(6) =5184a(7) =6272a(8) =16384a(9) =30375a(10) =41472a(11) =65536a(12) =102400a(13) =157464a(14) =247808a(15) =589824a(16) =640000a(17) =750141a(18) =1384448a(19) =3211264a(20) =3359232a(21) =5308416a(22) =7372800a(23) =9765625a(24) =14348907a(25) =16777216a(26) =37879808a(27) =39337984a(28) =59049000a(29) =84934656