Number of length n+3 0..7 arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..7 introduced in 0..7 order.
A243388
Number of length n+3 0..7 arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..7 introduced in 0..7 order.
Terms
- a(0) =14a(1) =46a(2) =174a(3) =737a(4) =3435a(5) =17402a(6) =94907a(7) =552660a(8) =3409915a(9) =22122613a(10) =149763921a(11) =1050072965a(12) =7573195764a(13) =55841366002a(14) =418835322674
External references
- oeis: A243388