Numbers having period-27 7-digitized sequences.

Terms

a(0) =12a(1) =18a(2) =21a(3) =24a(4) =39a(5) =42a(6) =45a(7) =54a(8) =78a(9) =81a(10) =87a(11) =93a(12) =99a(13) =102a(14) =108a(15) =114a(16) =117a(17) =120a(18) =129a(19) =141a(20) =144a(21) =147a(22) =168a(23) =171a(24) =174a(25) =180a(26) =186a(27) =192a(28) =201a(29) =204