Numbers n such that string 8,4 occurs in the base 9 representation of n but not of n-1.

Terms

a(0) =76a(1) =157a(2) =238a(3) =319a(4) =400a(5) =481a(6) =562a(7) =643a(8) =684a(9) =724a(10) =805a(11) =886a(12) =967a(13) =1048a(14) =1129a(15) =1210a(16) =1291a(17) =1372a(18) =1413a(19) =1453a(20) =1534a(21) =1615a(22) =1696a(23) =1777a(24) =1858a(25) =1939a(26) =2020a(27) =2101a(28) =2142a(29) =2182