Numbers having period-56 7-digitized sequences.

Terms

a(0) =6a(1) =9a(2) =15a(3) =27a(4) =33a(5) =36a(6) =48a(7) =51a(8) =57a(9) =60a(10) =63a(11) =66a(12) =69a(13) =72a(14) =75a(15) =84a(16) =90a(17) =96a(18) =105a(19) =123a(20) =126a(21) =132a(22) =135a(23) =138a(24) =150a(25) =153a(26) =159a(27) =162a(28) =177a(29) =183