Numbers n such that string 6,1 occurs in the base 9 representation of n but not of n-1.

Terms

a(0) =55a(1) =136a(2) =217a(3) =298a(4) =379a(5) =460a(6) =495a(7) =541a(8) =622a(9) =703a(10) =784a(11) =865a(12) =946a(13) =1027a(14) =1108a(15) =1189a(16) =1224a(17) =1270a(18) =1351a(19) =1432a(20) =1513a(21) =1594a(22) =1675a(23) =1756a(24) =1837a(25) =1918a(26) =1953a(27) =1999a(28) =2080a(29) =2161