Semiprimes (A001358) whose digit reversal is a powerful(1) number (A001694).

Terms

a(0) =4a(1) =9a(2) =10a(3) =46a(4) =94a(5) =121a(6) =169a(7) =215a(8) =526a(9) =869a(10) =961a(11) =982a(12) =1042a(13) =1273a(14) =1405a(15) =1843a(16) =2918a(17) =3194a(18) =4069a(19) =4633a(20) =5213a(21) =5221a(22) =5758a(23) =6313a(24) =6511a(25) =6937a(26) =8045a(27) =8402a(28) =8651a(29) =8882