Numbers with distinct decimal digits.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =9a(10) =10a(11) =12a(12) =13a(13) =14a(14) =15a(15) =16a(16) =17a(17) =18a(18) =19a(19) =20a(20) =21a(21) =23a(22) =24a(23) =25a(24) =26a(25) =27a(26) =28a(27) =29a(28) =30a(29) =31