Sum{d(i)*8^i: i=0,1,...,m}, where Sum{d(i)*5^i: i=0,1,...,m} is the base 5 representation of n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =8a(6) =9a(7) =10a(8) =11a(9) =12a(10) =16a(11) =17a(12) =18a(13) =19a(14) =20a(15) =24a(16) =25a(17) =26a(18) =27a(19) =28a(20) =32a(21) =33a(22) =34a(23) =35a(24) =36a(25) =64a(26) =65a(27) =66a(28) =67a(29) =68