Composite numbers whose concatenation of their aliquot parts, in ascending order, is a palindrome.

Terms

a(0) =93a(1) =121a(2) =393a(3) =497a(4) =755a(5) =842a(6) =961a(7) =993a(8) =1042a(9) =1255a(10) =1293a(11) =1642a(12) =1681a(13) =1893a(14) =1897a(15) =3721a(16) =3755a(17) =3997a(18) =4043a(19) =4061a(20) =4442a(21) =5041a(22) =5755a(23) =6797a(24) =8197a(25) =8842a(26) =9993a(27) =11042a(28) =11255a(29) =16593