Numbers with no 0's in their base-5 expansion.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =7a(6) =8a(7) =9a(8) =11a(9) =12a(10) =13a(11) =14a(12) =16a(13) =17a(14) =18a(15) =19a(16) =21a(17) =22a(18) =23a(19) =24a(20) =31a(21) =32a(22) =33a(23) =34a(24) =36a(25) =37a(26) =38a(27) =39a(28) =41a(29) =42