Number of unlock patterns of length n for the Android operating system.
A163889
Number of unlock patterns of length n for the Android operating system.
Terms
- a(0) =1a(1) =9a(2) =56a(3) =320a(4) =1624a(5) =7152a(6) =26016a(7) =72912a(8) =140704a(9) =140704
External references
- oeis: A163889