Smallest integer composed of digits 1..n such that no subsequence is repeated and every possible subsequence of length 2 appears.
A075854
Smallest integer composed of digits 1..n such that no subsequence is repeated and every possible subsequence of length 2 appears.
Terms
- a(0) =11a(1) =11221a(2) =1121322331
External references
- oeis: A075854