T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..k introduced in 0..k order.
A243389
T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..k introduced in 0..k order.
Terms
- a(0) =7a(1) =13a(2) =12a(3) =14a(4) =35a(5) =21a(6) =14a(7) =45a(8) =96a(9) =37a(10) =14a(11) =46a(12) =158a(13) =265a(14) =65a(15) =14a(16) =46a(17) =173a(18) =579a(19) =733a(20) =114a(21) =14a(22) =46a(23) =174a(24) =715a(25) =2165a(26) =2029a(27) =200a(28) =14a(29) =46
External references
- oeis: A243389