Numbers n such that string 6,0 occurs in the base 9 representation of n but not of n-1.

Terms

a(0) =54a(1) =135a(2) =216a(3) =297a(4) =378a(5) =459a(6) =486a(7) =540a(8) =621a(9) =702a(10) =783a(11) =864a(12) =945a(13) =1026a(14) =1107a(15) =1188a(16) =1215a(17) =1269a(18) =1350a(19) =1431a(20) =1512a(21) =1593a(22) =1674a(23) =1755a(24) =1836a(25) =1917a(26) =1944a(27) =1998a(28) =2079a(29) =2160