Smallest number of each digital type.

Terms

a(0) =1a(1) =10a(2) =11a(3) =100a(4) =101a(5) =102a(6) =110a(7) =111a(8) =1000a(9) =1001a(10) =1002a(11) =1010a(12) =1011a(13) =1012a(14) =1020a(15) =1021a(16) =1022a(17) =1023a(18) =1100a(19) =1101a(20) =1102a(21) =1110a(22) =1111a(23) =10000a(24) =10001a(25) =10002a(26) =10010a(27) =10011a(28) =10012a(29) =10020