T(n,k)=Number of length n+2 0..k arrays with no three unequal elements in a row and new values 0..k introduced in 0..k order.

A243641

T(n,k)=Number of length n+2 0..k arrays with no three unequal elements in a row and new values 0..k introduced in 0..k order.

Terms

    a(0) =4a(1) =4a(2) =8a(3) =4a(4) =9a(5) =16a(6) =4a(7) =9a(8) =21a(9) =32a(10) =4a(11) =9a(12) =21a(13) =50a(14) =64a(15) =4a(16) =9a(17) =21a(18) =51a(19) =120a(20) =128a(21) =4a(22) =9a(23) =21a(24) =51a(25) =127a(26) =289a(27) =256a(28) =4a(29) =9

External references