Composite numbers whose product of digits is 2.

Terms

a(0) =12a(1) =21a(2) =112a(3) =121a(4) =1112a(5) =1121a(6) =1211a(7) =11112a(8) =11121a(9) =11211a(10) =12111a(11) =21111a(12) =111112a(13) =121111a(14) =211111a(15) =1111112a(16) =1111121a(17) =1112111a(18) =1121111a(19) =1211111a(20) =2111111a(21) =11111112a(22) =11111121a(23) =11111211a(24) =11112111a(25) =11121111a(26) =11211111a(27) =12111111a(28) =21111111a(29) =111111112