Numbers with exactly three distinct base-6 digits.

Terms

a(0) =38a(1) =39a(2) =40a(3) =41a(4) =48a(5) =51a(6) =52a(7) =53a(8) =54a(9) =56a(10) =58a(11) =59a(12) =60a(13) =62a(14) =63a(15) =65a(16) =66a(17) =68a(18) =69a(19) =70a(20) =73a(21) =75a(22) =76a(23) =77a(24) =78a(25) =81a(26) =82a(27) =83a(28) =90a(29) =91