Numbers n such that string 8,6 occurs in the base 10 representation of n but not of n+1.

Terms

a(0) =86a(1) =186a(2) =286a(3) =386a(4) =486a(5) =586a(6) =686a(7) =786a(8) =869a(9) =886a(10) =986a(11) =1086a(12) =1186a(13) =1286a(14) =1386a(15) =1486a(16) =1586a(17) =1686a(18) =1786a(19) =1869a(20) =1886a(21) =1986a(22) =2086a(23) =2186a(24) =2286a(25) =2386a(26) =2486a(27) =2586a(28) =2686a(29) =2786