Numbers whose base-3 representation has one more 0 than 2's.

Terms

a(0) =3a(1) =10a(2) =12a(3) =18a(4) =29a(5) =31a(6) =33a(7) =37a(8) =39a(9) =45a(10) =55a(11) =57a(12) =63a(13) =86a(14) =88a(15) =92a(16) =94a(17) =96a(18) =100a(19) =102a(20) =110a(21) =112a(22) =114a(23) =118a(24) =120a(25) =126a(26) =136a(27) =138a(28) =144a(29) =164