T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..k introduced in 0..k order.
A243033
T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..k introduced in 0..k order.
Terms
- a(0) =6a(1) =12a(2) =9a(3) =13a(4) =32a(5) =13a(6) =13a(7) =42a(8) =85a(9) =19a(10) =13a(11) =43a(12) =147a(13) =226a(14) =28a(15) =13a(16) =43a(17) =162a(18) =536a(19) =601a(20) =41a(21) =13a(22) =43a(23) =163a(24) =672a(25) =1987a(26) =1598a(27) =60a(28) =13a(29) =43
External references
- oeis: A243033