Replace n with concatenation of its divisors.

Terms

a(0) =1a(1) =12a(2) =13a(3) =124a(4) =15a(5) =1236a(6) =17a(7) =1248a(8) =139a(9) =12510a(10) =111a(11) =1234612a(12) =113a(13) =12714a(14) =13515a(15) =124816a(16) =117a(17) =1236918a(18) =119a(19) =12451020a(20) =13721a(21) =121122a(22) =123a(23) =1234681224a(24) =1525a(25) =121326a(26) =13927a(27) =12471428a(28) =129a(29) =12356101530