Prime powers (A025475) whose decimal digit reversal is also a prime power.

Terms

a(0) =1a(1) =4a(2) =8a(3) =9a(4) =121a(5) =169a(6) =343a(7) =961a(8) =1331a(9) =10201a(10) =12769a(11) =14641a(12) =94249a(13) =96721a(14) =1030301a(15) =1042441a(16) =1062961a(17) =1216609a(18) =1442401a(19) =1692601a(20) =9066121a(21) =104060401a(22) =121066009a(23) =900660121a(24) =12148668841a(25) =12367886521a(26) =12568876321a(27) =14886684121