Composite palindromes whose sum of prime factors is palindromic (counted with multiplicity).

Terms

a(0) =4a(1) =6a(2) =8a(3) =9a(4) =121a(5) =292a(6) =444a(7) =575a(8) =717a(9) =828a(10) =989a(11) =1331a(12) =2002a(13) =4884a(14) =5445a(15) =8668a(16) =9559a(17) =10201a(18) =11211a(19) =11811a(20) =13231a(21) =14241a(22) =14541a(23) =14641a(24) =15251a(25) =15751a(26) =16261a(27) =16761a(28) =18281a(29) =19291