Numbers whose base-6 representation Sum_{i=0..m} d(i)*6^(m-i) has d(i)=0 for all odd i.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =12a(7) =18a(8) =24a(9) =30a(10) =36a(11) =37a(12) =38a(13) =39a(14) =40a(15) =41a(16) =72a(17) =73a(18) =74a(19) =75a(20) =76a(21) =77a(22) =108a(23) =109a(24) =110a(25) =111a(26) =112a(27) =113a(28) =144a(29) =145