Numbers k such that string 9,4 occurs in the base 10 representation of k but not of k+1.

Terms

a(0) =94a(1) =194a(2) =294a(3) =394a(4) =494a(5) =594a(6) =694a(7) =794a(8) =894a(9) =949a(10) =994a(11) =1094a(12) =1194a(13) =1294a(14) =1394a(15) =1494a(16) =1594a(17) =1694a(18) =1794a(19) =1894a(20) =1949a(21) =1994a(22) =2094a(23) =2194a(24) =2294a(25) =2394a(26) =2494a(27) =2594a(28) =2694a(29) =2794