Number of length n+2 0..9 arrays with no three elements in a row with pattern aba (with a!=b) and new values 0..9 introduced in 0..9 order.
A243606
Number of length n+2 0..9 arrays with no three elements in a row with pattern aba (with a!=b) and new values 0..9 introduced in 0..9 order.
Terms
- a(0) =4a(1) =10a(2) =29a(3) =97a(4) =366a(5) =1534a(6) =7050a(7) =35167a(8) =188834a(9) =1084123a(10) =6616633a(11) =42711918a(12) =290232665a(13) =2066233824a(14) =15337289086a(15) =118111928594a(16) =938944428249
External references
- oeis: A243606