Numbers without consecutive equal base 3 digits.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =7a(6) =10a(7) =11a(8) =15a(9) =16a(10) =19a(11) =20a(12) =21a(13) =23a(14) =30a(15) =32a(16) =33a(17) =34a(18) =46a(19) =47a(20) =48a(21) =50a(22) =57a(23) =59a(24) =60a(25) =61a(26) =64a(27) =65a(28) =69a(29) =70