Odd palindromes which are semiprimes with an even number of digits.

Terms

a(0) =33a(1) =55a(2) =77a(3) =1111a(4) =1441a(5) =1661a(6) =1991a(7) =3113a(8) =3223a(9) =3443a(10) =3883a(11) =7117a(12) =7447a(13) =7997a(14) =9119a(15) =9229a(16) =9449a(17) =100001a(18) =103301a(19) =104401a(20) =107701a(21) =113311a(22) =115511a(23) =116611a(24) =124421a(25) =125521a(26) =130031a(27) =136631a(28) =139931a(29) =146641