Numbers n such that string 5,2 occurs in the base 9 representation of n but not of n+1.

Terms

a(0) =47a(1) =128a(2) =209a(3) =290a(4) =371a(5) =431a(6) =452a(7) =533a(8) =614a(9) =695a(10) =776a(11) =857a(12) =938a(13) =1019a(14) =1100a(15) =1160a(16) =1181a(17) =1262a(18) =1343a(19) =1424a(20) =1505a(21) =1586a(22) =1667a(23) =1748a(24) =1829a(25) =1889a(26) =1910a(27) =1991a(28) =2072a(29) =2153