a(n) is the lowest number in the sequence of the first occurrence of exactly n consecutive numbers with at least one repeated digit, or -1 if no such number exists.
A337707
a(n) is the lowest number in the sequence of the first occurrence of exactly n consecutive numbers with at least one repeated digit, or -1 if no such number exists.
Terms
- a(0) =11a(1) =121a(2) =99a(3) =1898a(4) =12898a(5) =123898a(6) =1234898a(7) =12345898a(8) =123456898a(9) =110a(10) =1909a(11) =10330a(12) =9188a(13) =9088a(14) =19787a(15) =129787a(16) =1239787a(17) =12349787a(18) =123459787a(19) =1210a(20) =12909a(21) =103430a(22) =1024540a(23) =2988a(24) =1988a(25) =27987a(26) =237987a(27) =2347987a(28) =23457987a(29) =12310
External references
- oeis: A337707