Number of nonary sequences of length n such that no two consecutive terms have distance 4.
A287819
Number of nonary sequences of length n such that no two consecutive terms have distance 4.
Terms
- a(0) =1a(1) =9a(2) =71a(3) =561a(4) =4433a(5) =35031a(6) =276827a(7) =2187585a(8) =17287073a(9) =136608591a(10) =1079529611a(11) =8530826457a(12) =67413620993a(13) =532726379847
External references
- oeis: A287819