Number of sequences over the alphabet {0,1,...,9} such that no two consecutive terms have distance 2.
A287826
Number of sequences over the alphabet {0,1,...,9} such that no two consecutive terms have distance 2.
Terms
- a(0) =1a(1) =10a(2) =84a(3) =708a(4) =5968a(5) =50308a(6) =424080a(7) =3574860a(8) =30134944a(9) =254028100a(10) =2141377008a(11) =18051134892a(12) =152165391616
External references
- oeis: A287826