If d,e are consecutive digits of n in base 12, then |d-e|>=5.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =10a(10) =11a(11) =18a(12) =19a(13) =20a(14) =21a(15) =22a(16) =23a(17) =31a(18) =32a(19) =33a(20) =34a(21) =35a(22) =44a(23) =45a(24) =46a(25) =47a(26) =57a(27) =58a(28) =59a(29) =60