Dihedral palindromic primes.

Terms

a(0) =2a(1) =5a(2) =11a(3) =101a(4) =181a(5) =18181a(6) =1008001a(7) =1022201a(8) =1055501a(9) =1082801a(10) =1085801a(11) =1180811a(12) =1208021a(13) =1221221a(14) =1250521a(15) =1280821a(16) =1508051a(17) =1520251a(18) =1551551a(19) =1580851a(20) =1802081a(21) =1805081a(22) =1880881a(23) =1881881a(24) =100111001a(25) =100888001a(26) =108101801