Palindromic primes with digit sum 20.

Terms

a(0) =929a(1) =16661a(2) =17471a(3) =36263a(4) =70607a(5) =72227a(6) =73037a(7) =91019a(8) =1074701a(9) =1082801a(10) =1180811a(11) =1262621a(12) =1328231a(13) =1360631a(14) =1508051a(15) =1532351a(16) =1630361a(17) =1712171a(18) =1802081a(19) =3160613a(20) =3218123a(21) =7014107a(22) =7300037a(23) =9002009a(24) =102383201a(25) =102707201a(26) =103282301a(27) =103363301a(28) =105323501a(29) =106060601