Numbers k such that the string 6,3 occurs in the base 9 representation of k but not of k-1.

Terms

a(0) =57a(1) =138a(2) =219a(3) =300a(4) =381a(5) =462a(6) =513a(7) =543a(8) =624a(9) =705a(10) =786a(11) =867a(12) =948a(13) =1029a(14) =1110a(15) =1191a(16) =1242a(17) =1272a(18) =1353a(19) =1434a(20) =1515a(21) =1596a(22) =1677a(23) =1758a(24) =1839a(25) =1920a(26) =1971a(27) =2001a(28) =2082a(29) =2163