For m=2,3,..., write m in bases 2,3,..,m.

Terms

a(0) =10a(1) =11a(2) =10a(3) =100a(4) =11a(5) =10a(6) =101a(7) =12a(8) =11a(9) =10a(10) =110a(11) =20a(12) =12a(13) =11a(14) =10a(15) =111a(16) =21a(17) =13a(18) =12a(19) =11a(20) =10a(21) =1000a(22) =22a(23) =20a(24) =13a(25) =12a(26) =11a(27) =10a(28) =1001a(29) =100