Number of length n+2 0..8 arrays with no three elements in a row with pattern aba or abb (with a!=b) and new values 0..8 introduced in 0..8 order.
A243517
Number of length n+2 0..8 arrays with no three elements in a row with pattern aba or abb (with a!=b) and new values 0..8 introduced in 0..8 order.
Terms
- a(0) =3a(1) =5a(2) =10a(3) =25a(4) =77a(5) =280a(6) =1157a(7) =5296a(8) =26406a(9) =141585a(10) =807064a(11) =4837587a(12) =30181075a(13) =194210670a(14) =1279159631a(15) =8571132698a(16) =58153599684a(17) =398124806735
External references
- oeis: A243517