Numbers n such that string 4,6 occurs in the base 10 representation of n but not of n+1.

Terms

a(0) =46a(1) =146a(2) =246a(3) =346a(4) =446a(5) =469a(6) =546a(7) =646a(8) =746a(9) =846a(10) =946a(11) =1046a(12) =1146a(13) =1246a(14) =1346a(15) =1446a(16) =1469a(17) =1546a(18) =1646a(19) =1746a(20) =1846a(21) =1946a(22) =2046a(23) =2146a(24) =2246a(25) =2346a(26) =2446a(27) =2469a(28) =2546a(29) =2646