Number of length n+3 0..5 arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..5 introduced in 0..5 order.
A243030
Number of length n+3 0..5 arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..5 introduced in 0..5 order.
Terms
- a(0) =13a(1) =43a(2) =163a(3) =693a(4) =3223a(5) =16060a(6) =84207a(7) =457676a(8) =2549156a(9) =14430921a(10) =82566935a(11) =475670431a(12) =2752521185a(13) =15973183106a(14) =92863593361a(15) =540515596648
External references
- oeis: A243030