If d,e are consecutive digits of n in base 8, then |d-e|>=5.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =14a(8) =15a(9) =23a(10) =40a(11) =48a(12) =49a(13) =56a(14) =57a(15) =58a(16) =112a(17) =113a(18) =120a(19) =121a(20) =122a(21) =184a(22) =185a(23) =186a(24) =325a(25) =326a(26) =327a(27) =389a(28) =390a(29) =391