Number of length n+4 0..3 arrays with no five consecutive elements with pattern ababa or abbba (possibly a=b) and new values 0..3 introduced in 0..3 order.
A244178
Number of length n+4 0..3 arrays with no five consecutive elements with pattern ababa or abbba (possibly a=b) and new values 0..3 introduced in 0..3 order.
Terms
- a(0) =48a(1) =173a(2) =650a(3) =2495a(4) =9667a(5) =37604a(6) =146521a(7) =571315a(8) =2228340a(9) =8692454a(10) =33909901a(11) =132287996a(12) =516081723a(13) =2013345287a(14) =7854504270a(15) =30642176351a(16) =119542013302a(17) =466360306590
External references
- oeis: A244178