The almost-natural numbers: write n in base 10 and juxtapose digits.

Terms

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