Numbers having period-3 7-digitized sequences.

Terms

a(0) =124a(1) =142a(2) =148a(3) =184a(4) =214a(5) =241a(6) =259a(7) =295a(8) =355a(9) =412a(10) =418a(11) =421a(12) =481a(13) =529a(14) =535a(15) =553a(16) =592a(17) =814a(18) =841a(19) =925a(20) =952a(21) =1024a(22) =1042a(23) =1048a(24) =1084a(25) =1204a(26) =1240a(27) =1402a(28) =1408a(29) =1420