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

Terms

a(0) =16a(1) =116a(2) =169a(3) =216a(4) =316a(5) =416a(6) =516a(7) =616a(8) =716a(9) =816a(10) =916a(11) =1016a(12) =1116a(13) =1169a(14) =1216a(15) =1316a(16) =1416a(17) =1516a(18) =1699a(19) =1716a(20) =1816a(21) =1916a(22) =2016a(23) =2116a(24) =2169a(25) =2216a(26) =2316a(27) =2416a(28) =2516a(29) =2616