Numbers n such that phi(n) + sigma(n) = n + reversal(n).

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =11a(6) =101a(7) =131a(8) =151a(9) =181a(10) =191a(11) =313a(12) =353a(13) =373a(14) =383a(15) =727a(16) =757a(17) =787a(18) =797a(19) =919a(20) =929a(21) =10301a(22) =10501a(23) =10601a(24) =11311a(25) =11411a(26) =12421a(27) =12721a(28) =12821a(29) =13331