Numbers n such that string 8,1 occurs in the base 9 representation of n but not of n-1.

Terms

a(0) =73a(1) =154a(2) =235a(3) =316a(4) =397a(5) =478a(6) =559a(7) =640a(8) =657a(9) =721a(10) =802a(11) =883a(12) =964a(13) =1045a(14) =1126a(15) =1207a(16) =1288a(17) =1369a(18) =1386a(19) =1450a(20) =1531a(21) =1612a(22) =1693a(23) =1774a(24) =1855a(25) =1936a(26) =2017a(27) =2098a(28) =2115a(29) =2179