Palindromic concatenation of prime divisors of numbers from A192140.

Terms

a(0) =2a(1) =3a(2) =2a(3) =5a(4) =7a(5) =2a(6) =3a(7) =11a(8) =101a(9) =11a(10) =131a(11) =151a(12) =181a(13) =191a(14) =313a(15) =7a(16) =353a(17) =373a(18) =383a(19) =727a(20) =383a(21) =757a(22) =787a(23) =797a(24) =919a(25) =929a(26) =11a(27) =73137a(28) =101a(29) =10301