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

Terms

a(0) =22a(1) =103a(2) =184a(3) =198a(4) =265a(5) =346a(6) =427a(7) =508a(8) =589a(9) =670a(10) =751a(11) =832a(12) =913a(13) =927a(14) =994a(15) =1075a(16) =1156a(17) =1237a(18) =1318a(19) =1399a(20) =1480a(21) =1561a(22) =1642a(23) =1656a(24) =1723a(25) =1782a(26) =1885a(27) =1966a(28) =2047a(29) =2128