Numbers n such that string 4,2 occurs in the base 9 representation of n but not of n-1.

Terms

a(0) =38a(1) =119a(2) =200a(3) =281a(4) =342a(5) =362a(6) =443a(7) =524a(8) =605a(9) =686a(10) =767a(11) =848a(12) =929a(13) =1010a(14) =1071a(15) =1091a(16) =1172a(17) =1253a(18) =1334a(19) =1415a(20) =1496a(21) =1577a(22) =1658a(23) =1739a(24) =1800a(25) =1820a(26) =1901a(27) =1982a(28) =2063a(29) =2144