Number of length-n 0..7 arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order.
A268955
Number of length-n 0..7 arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =12a(4) =40a(5) =154a(6) =656a(7) =3074a(8) =15615a(9) =85314a(10) =497262a(11) =3068890a(12) =19899645a(13) =134520386a(14) =940841796a(15) =6760952170a(16) =49617422739a(17) =370013347266
External references
- oeis: A268955