Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^(m-i) has even d(i) for all odd i.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =9a(8) =11a(9) =13a(10) =14a(11) =16a(12) =18a(13) =20a(14) =21a(15) =23a(16) =25a(17) =27a(18) =28a(19) =30a(20) =32a(21) =34a(22) =35a(23) =37a(24) =39a(25) =41a(26) =42a(27) =44a(28) =46a(29) =48