Numbers whose base-9 representation is the juxtaposition of two identical strings.

Terms

a(0) =10a(1) =20a(2) =30a(3) =40a(4) =50a(5) =60a(6) =70a(7) =80a(8) =738a(9) =820a(10) =902a(11) =984a(12) =1066a(13) =1148a(14) =1230a(15) =1312a(16) =1394a(17) =1476a(18) =1558a(19) =1640a(20) =1722a(21) =1804a(22) =1886a(23) =1968a(24) =2050a(25) =2132a(26) =2214a(27) =2296a(28) =2378a(29) =2460