Palindromes q derived from palindromes p such that pi(p) = q.

Terms

a(0) =0a(1) =1a(2) =2a(3) =2a(4) =3a(5) =3a(6) =4a(7) =4a(8) =4a(9) =5a(10) =8a(11) =11a(12) =55a(13) =66a(14) =77a(15) =99a(16) =99a(17) =101a(18) =121a(19) =141a(20) =151a(21) =161a(22) =303a(23) =525a(24) =757a(25) =797a(26) =1551a(27) =2222a(28) =4114a(29) =4334